Ok--here's my situation,

Had a Tower .46 in my trainer -- couldn't get it to run worth anything, and while I was still on the buddy cord my instructor got so frustrated at trying to keep the engine running he sold me a (ab)used .40LA for $20. This thing has been landed inverted on asphalt more than once. - the carb is from a .40 FP, and it won't win any beauty contests, but it usually hits on the 2nd flip, runs like a top once I tune the needle a few clicks.

I've moved on to other planes, and have just bought a Hangar9 Twist .40 - and all I have engine wise that I can put in it until I can afford something else is the Tower .46. I've tried the .46 on a 3d spad and it's still just a tempermental engine. I have wondered about swapping the Tower carb for something else, but does anyone have any reccomendations on what might fit/run properly on it?

I can't upgrade powerplants for another month or so, so anything that would make it a little more reliable would help.