Well, I got the Fox .45 running pretty good...... only prob. is every once in awhile going from idle to WOT the engine would cut off. It would happen all the time, just sometimes. I could just imagine it cutting off just as I hit the throttle going into a hover. Soooo, I went to the LHS & came back with a new Thunder Tiger .46. Played with it in the yard & up & down the drive & it seems to run fine (rich until broke in). Accidently got it airborne on a run down the driveway & luckly threaded it through the space between a power pole & it's guide wire
awat- how old is your motor & how's it performed for you?