Clothes take too long to dry

You definitely have an air flow issue. Let's do some tests to see if we can pinpoint the cause. Step 1: Remove any clothes and the lint filter.Inspect blower housing inlet below the filter to see if there are any restrictions or obstructions. If OK, proceed to >Step 2: Replace lint filter only and remove the vent to the outside from the rear of the dryer. Put an old nylon stocking over the vent coming out of the dryer, and do a load of clothes. If dryer works fine, your vent to the outside is at fault and needs to be corrected. If not certain, proceed to>Step3: Remove the nylon stocking. With the dryer set on air fluff, do an air flow test comparison with and without the filter in place. I use a Kleenex and gently stretch it across/over the dryer vent tube, Have someone turn the dryer on and see if it is strong enough to rip the Kleenex. If no filter in and Kleenex rips and with filter in doesn't, then your filter is at fault This may not be definitive enough to evaluate for certain, and only needs to be done after the nylon test fails. After performing these tests, let me know if my advice helped resolve this issue by rating my answer.
If you need more assistance, suspend your rating, and post me back and I will be happy to assist.

Thank you,
Dave E. (Illeagle)