Originally Posted by losi_racer

if he didnt then i dont see how they can call them mario rossi tuned motors.

Does Kernal Sanders tune the friars that make your KFC chicken?

I've got four gallons on a GRP tuned. I dont race every weekend. After 2 weeks of sitting it was un-tunable today. I began systematically going through the obvious things but the same result concluded. Motor would run good, then go "dumb" rich. I was told by a very knowledgeable person that this is common and it is due to needle o-rings(idle and high).

Motor has ran for a couple weeks at 2.5-3.25 out on the high speed needle with the bottom as lean as I could get it. The motor wouldnt run until I leaned the top. Is everyone throwing their motors away once this happens, because I havn't seen anything resorting to these problems here, I hear of the mystery flame, but no fix other than buying another brand of engine? If I set the engine's needles as losi claims, it wont run at all, after four gallons. I wish Drake Would respond to my "real world" totall screwed situation.

(MOTOR HAS TONS OF PINCH)


My question to the board is, are their any mentions of any of this, here?