I have posted about this before but am still concerned.
Puch maxi with stock cigar exhaust and opened up stock airbox. Changed the main jet to 58 (I think). Seems to run OK with a hint of 4 stroking at wot when cold but goes away when warmed up. Head temp was 340 today after running WOT on flat ground with an OAT of 60deg F. Timing is set at 16BTDC. Did a plug chop today with a new plug and it appeared light brown/ normal. Would leaking seals cause a head temp to be higher than normal while the plug looks like its not running lean? Went to a local ped shop today to get some jets and they said the a basically non kitted 50cc Puch should run 275-300.