Troque setting on triple tree fork triple tree fork's for a dyna FXRS 1990 Harley Davidson

SOURCE: steering head adjustment, triple trees

raise the front of the bike off the ground with a scissor jack and then lift up on the front wheel while somebody holds the bike. You should not feel it move back and forth but it should still turn freely. There should be NO sideways play in it is what I am trying to say but still be able to turn smoothly

SOURCE: 93 Dyna low rider fork oil.

your local hd shop should be able to answer this for you as its a mesured amount and to much or too little will make the bike not handle right

SOURCE: Will the wheels from a 2000 Harley-Davidson FXDX

Check to see if they both have the same diameter axle. Harley went from a 7/8 inch diameter axle to a 1 inch diameter axle sometime around that time period.

SOURCE: need to replace clutch 1986 fxrs harley davidson

replace the old oil with no more then 1 quart of H-D Primary Oil.

SOURCE: I have a 2006 Harley

You didn't say which Dyna series bike you have but I'm going to say that Sportster specs are not the same as for a Dyna. If you think you have a gap between your triple tree and the steering head of the bike, something may not be assembled correctly. I'd take to a shop or a dealer and have them check the front end.

Good Luck
Steve