I went to a 55 pilot and it seemed to work out a bit better, I got the air screw in to 3/4 to 1 turn out and it seems to like that the best. I also went up to a 195 main to see if that did anything, I really couldn't tell any difference with the acception of the plug turning darker faster. I also ordered a eek from carbparts.com. it should be here this week sometime. do these things have rev. limiters on them built into the cdi box???