Well you guys helped already. went to all the mentioned mfg websites and nosed around. Fan is almost definately a dynamax, but it does have a 6mm hex on the front. Took the same allen wrench as my TT Raptor heli. I'll likely make my own probe after seeing the prices for the not really available units. Do you happen to know of a good source for loose ball end wrenches? can only get sets around here. So far, I am leaning towards yellow aircraft as airframe manufacturer. Foam core wings and fiberglass fuse. I won't go to a smaller tank, but I may try a round instead of square. Fit was very tight, no room for any foam. Also I forgot to mention that the rudder is fixed. is this going to give me a serious problem when trying to land crosswind? Also noticed inflight mixture control while on a couple of the sites. Should I add this?(extra channel is no prob, and should be able to find a spot 4 servo and valve) I will try to figure out how to post pics as soon as i find my darn missing digital camera.