How are your BEES running now??? I haven't heard of any problems with hot starts. I purchased mine from Paul at Artes USA. He pre runs them and makes sure they are properly set up before shipping them off to a customer. I believe minus Jesus and Philepe Paul has the most experience with these engines ( in the U.S). It is just an added + to deal with a rep that knows what he is doing. Artes turbines is lucky to have him as a representative. He has made my transition to turbine flight a great one!! I now own four jets all powered by Artes turbines purchased from paul,,