Hi Guys, I most likely have some ignition problem which I'm struggling to identify. I have cool motor, 130PSI+ compression, carbs cleaned, ran strong @ 40mph on 13x19 prop. the other day, RPM fell to 2.200 after 15mins of strong WOT, so temperature could come into play. pressing primer ball did not have any effect, nore did pressing choke solenoid so most likely no fuel or carb issue here. Carbs spent plenty of fuel despite only 2200RPM and motor was nearly about to fully bog down at WOT. Motor has no SLOW temperature sensor, so I'm guessing on stator, timerbase, CDI or ignition coils issue. Idling and neutral RPMs were fine at any time though, no probs. After cooling down a bit, I could ran again at WOT, but after 1 Minute .. see above, story repeated. I'd be so glad to get some troubleshooting support what to do 1st. best regards Joerg