LG DLGX2502V Dryer Keeps Tripping Thermal Limiter Fuse

[lou123]

I have an LG DLGX2502V dryer that just started tripping thermal fuse.  I disassembled the exhaust duct work and cleaned it, though it was not very bad at all.  I reassembled and ran it on air dry just to check exhaust flow, good exhaust at outside vent baffle.  Still no heat, found the thermal limit fuse, was able to reset it and it ran, gas came on, and it seemed to be heating up fine.  Shut it off, later on added wet clothes and ran it.  Limit switch tripped again.  Bad limit switch?  What should I check.  Thanks in advance.