Well I got the 4200 governor spring in the other day, I had the time to do it so tore into my pump and put it in. I also fixed my fuel leak while I had the top off that has been leaking for 2 years (throttle shaft O-ring). It was kind of a pain to get that tight 4200 spring hooked back up to the top hat since its a much thicker and tighter spring but I got it. Went to fire it up and it wouldn't run unless I gave it some throttle, it was idling way too low and would die, so i re indexed my throttle and now it runs great. Throttle is way touchy and snappy but I like it. You barely touch it and your already at 2000 rpm. I wanna put this 5000 back on and see how well it spools now because it gets up much quicker. Seems to have a little more pull on top end, but I need to get better lift pump in, 60 lb springs and studs til i really open er up. Oh and it didn't runaway, it does the same thing as before, as soon as it hits about 1200 rpm in neutral it just takes off on its own til i let off. I thought it was close to runaway so to be prepared if it did I put a plastic bag over my filter before I did all this to see if it would kill it in case it ran away... BAD idea! it worked and killed it, but it scrunched up my filter and my rubber elbow that connects to the turbo and that was just idling! So i bent my filter back out, but it has a nice wrinkle in it now, I recommend just using a board.