I've been able to tune mine in 'OK' (L&H) without running into a stop - so far. But I haven't actually checked it out deep enough to see if there is actually a stop there. I got it used, so also a chance someone else already doctored the stop, I suppose. I also haven't touched the muffler yet - but also haven't looked at it to see if someone else has. (Often thought it didn't quite sound stock). I just ran it when I got it (after getting a new B&C) and didn't think about those things.
Starting problems - it won't. Usually every time I shut it off then tried to restart it hot, I could be assured that it wouldn't start. It acted like it flooded itself on shut down - I would pull & pull & pull with no choke, no luck. Full throttle no choke, nothing. Last resort 'maybe a little choke' - nothing. It would have to sit for like half an hour before it could come to life again. Plug reading was inconclusive to me - didn't look wet, but maybe a little damp. And cranking it over with the plug out then trying it again usually didn't help either. My last session with the tuning screws, I set it to idle lower - like, barely idling - and leaned it out a bit. I think it did start hot a couple times after that, but I haven't used it where I've had to restart it hot, for quite a while. So not sure if that really did anything or not. It's a love/hate thing - really love using it, but when it gets into that I'm ready to pitch the thing. Starts awesome when cold - 2 or 3 pulls with choke on to a bite, then one more with it off.
) so I am sure yours runs much stronger.
