I have found Frigidaire dryers are the worst for LP conversions, I've never seen another brand have this problem when doing a conversion, (it's usually the air adjustment that with the LP conversion kits for Frigidaire have virtually zero adjustment ability).
First big problem, almost impossible to see how flame is burning, but you definitely know it's wrong when you hear it pop back to orifice then sounds totally wrong burning, (have to have up on blocks and site thru little channel in bottom of dryer or kind of thru stack mount holes to even see flame). The you have to pull it all apart to try and make any air adjustments, can't run with front off and have airflow to adjust while running.
I HATE FRIGIDAIRE LP CONVERSIONS!!!!!!!!!