I had to run full chock to get it back to the house before it shut down, what cuase this?

Stating the obvious this is fuel starvation, so stating the the easiest things first replace the fuel filter in the tank, check the fuel hose up to the carb for any signs of leaks, replace if needed, are the hoses to the purge bulb fitted around the correct way as you have replaced it? dirt in the carb itself, this would require stripping the carb and cleaning, at the same time replacing the diaphragms, failing all this you may have an air leak, leaking gaskets, or crank seals.

Theres a blocked orifice in the carb- Cleaned or not. Check by running thin wire or fish line thru all orifices

WHEN YOU GIVE A CARB CHOKE, IT RESTRICTS AIR FLOW AND GIVING THE ENGINE MORE GAS INSTEAD OF A REQUIRED MIXTURE... USUALLY THIS IS FOR STARTING IN COLD TEMPS. UNTIL THE ENGINE WARMS UP AND YOU RETURN THE CHOKE BACK TO NORMAL. THAT IS ALL THE CHOKE DOES.... IT DOES NOT MAKE THE ENGINE RUN BETTER BECAUSE YOU THINK IT WILL.

bad needle and seat or chock not shutting off if chock shuts off ok then rebuild caeb with a carb kit that has a needle and seat with it

half chocked is not enough gas usually. Probably a partial clog in the fuel filer. replace it, if one of those bronze cone things on the tank nipple, cut it off and put an inline filter on the fuel, take the carb bowl off, clean the float and needle, then reassemble all. If it still aint right you got to rebuild the carb. I recommend just buying a new carb, a lot less hassel.

Sounds like the carb needs to be adjusted by someone that knows how to repair engines. Note: if the carb is set too lean, it will damage the engine.

Are you sure you have the right fuel mixture? Many of these require 2 Cycle oil to be added to the gas. If fuel is right, you may have a vacuum leak at the carb (or crack in base where it mounts to the engine). My weedwacker needed to be run on half choke for about 10 min before it got hot enough to run with choke off.

remove the carburator.. It's plugged.
disassemble and soak the body in fresh gasoline for about 10 mins.
Blow out all the ports with small engine carb cleaner and reassemble.
Drain the gas tank , clean it and refill with fresh gas mixture
It doesn't take much to clog those little carbs

Remove the air intake and spray the carb down with carb cleaner. Buy new gas/mix. Put 1 oz of Sea Foam" into one gallon of the mix. Run two or more tanks of fuel and it should straighten out.

Here was my solution:
I was having problems with my ryobi cs30 weedeater also. It would start up fine on full choke, but i could not give it more than half throttle or ever take the choke off or it would stall out. I replaced fuel mixture, spark plug, spark arrestor/exhaust, fuel lines, cleaned carb, and still nothing! I was considering getting a better machine. Then i decided to play with the carb adjustments.(on my cs-30, they are two screws on the carb that have a "L" and "H" next to them) I dont think you can get the specialty tool for adjusting the carb unless you are a repair tech, so i just took a Dremmel tool with the circular cut-off wheel to the head of the specialty screws and made them into "flat-head" screws so i could adjust them with a regular screwdriver (if you dont have a dremmel too, get one!) (As i was cutting into the head of the screws, i also cut into the casing protecting the head of the screws that was in the way, this does not cause any damage to the unit, that casing is only there to keep "un-certified" people from adjusting it for themselves.)
Now to the easy part: The "L" screw adjusts the idle fuel mixture and the "H" screw adjusts the full throttle fuel mixture. turning the screws clockwise make the machine run leaner (less fuel) and counter clockwise makes it run richer (more fuel).
-I started out by turning each screw 1/2 turn counter clockwise and started it up, then as it was idling, i started adjusting the "L" screw as i was moving the choke position to run, after a few full turns counter clockwise of the "L" screw, it was idling perfectly in the run position, then i did the same thing the the "H" screw while holding down the throttle and i got it to run perfectly in the run position. Now it is running way better than it ever has. I hope this helps everyone.
Good Luck!