Welcome to the group. First off, for normal maintenance on the Rotax engine, about all you need are metric wrenches, sockets and allen wrenches. Usually they are pretty dependable. My guess is the AnP just doesn't want to do it, maybe like he said, just to busy. Ask him if he knows any other AnPs, and talk to other aircraft owners to see who they use for their conditional inspections. JImChuk

PS. probably best if you can find an AnP who does it as a sideline. He probably doesn't have a huge hangar to pay for and his prices will likely reflect that.