I have tested everything on a Kenmore 110-74l 812200 Gas dryer all continuity checks out. We cleaned out all the exhaust vents and removed dirt debris near the blower. All other exhaust is fine. Tested continuity on all parts and they check out" cycling thermostat, high limit thermostat, low limit thermostat, thermal fuse, solenoid/coils, igniter and the radiant flame sensor. It seems to ignite gas once then not a second time. Sometimes it is cycling 2-3 times. With the drum and front panel off we seem to get about 3-4 flame cycles then it stops. What is the best bet on what is wrong. all items seem to working.