RE: NGH 38CC 4 stroke
Well NGH did have the static timing for the little NGH 9cc engine set pretty high too. I was thinking it had to do with the CDI unit they got from RCexl for their engines. The microprocessor inside may be a little slow in getting the timing signal and responding to it. So there is extra time delay needed for the timing to work out right. So this may be quite normal for those particular CDI units they are using.