The header was just a test - I was curious to see if the only thing killing the top speed was the restrictive exhaust. To be honest I am a little surprised that it didn't make any difference.
As far as dialing in the buggy - The only thing I haven't "dialed in" is the main jet. It runs fine although it seems like once the carb is adjusted when warm it isn't quite right when cold. I had to turn the idle up to get it to idle when cold. Then it was too high once the engine warmed.
I don't intend to do any chopping until I finish all the mods (muffler, potentially a new head?). Should I play with the main jetting more or possibly throw the original carb back on?
I went a size larger on the main (I could see a difference in size, may have been two sizes) and there was no measurable difference in top speed.
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