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<DIV>I had a YS91 that ran and ran for 8 years. I had two other 91's that didn't run no matter what. I had a 120NC that was a paper weight at best. I had a 140FZ that ran and ran for 3 years. When you have an airplane that is an engine specific design, you are kinda stuck. I bought a 110, no luck. So I go to the hobby store and inspect 8 YS 110's. Some had poor feeling movement, some had gaskets bulging out from the mating surfaces. After going through all of them I picked one and crossed my fingers. The quality between motor number 1 and number 8 was marked. I took the motor home, the pump wasn't flush, I fixed that. The low speed screw was out three turns, I fixed that. Then I tighted all the bolts I could get to on the motor. I broke it in filthy rich on 25% in the driveway. I currently have three gallons of 30% through it and it has been perfect! My point? I feel that maybe YS has a quality control problem. I have had YS's that were great out of the box and some that nobody, including TN, could not get to run right. Have I found the problem? Don't know but this last excersize seemed to work for me.</DIV>
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<DIV>See ya,</DIV>
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<DIV>Bruce</DIV></BODY></HTML>