I'm very happy with the performance of my bike after having Ron modify both the carb and the head. Honestly, when I bought the bike, it wasn't jetted for my altitude and I didn't want to fuss with jetting.
My bike pulls clean through the rev range which is mostly what I was after. Ron also cut the head to give me a bump in compression which helps living at over 4000 feet.
Last weekends race had some high speed fire roads and the bike performed well there also.
I have yet to optimize the air screw adjustment but that is next.
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Jon
'05 GG 300 DE (race bike)
'06 KTM 450 XC (dual sport & supermoto)
'09 GG 280 TXT (to learn on)
'02 BMW R1150RT (for racking up the miles)
Four wheels move the body, two wheels move the soul
If everything seems under control, you're not going fast enough
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