My TT 91 high speed needle is out 2 1/2 turns and no it is not completely broke in yet. Suspect I will gain more rpms as it goes.I just finished assembly of a Prince America Hobby Star that I intend to use to replace the Superstar trainer I keep around. It went together fine. Only thing I had to do was move the throttle cable a little to match the 4 stroke location. Very easy to do and only took a few minutes to do and secure in place. Had about 3 engine choices, went with a Saito 45, it fit in the factory mount. Placed battery & reciever all the way forward and it balanced right on the supplied cg mark. Addition of a spinner in the future will give me a little down attitude, just perfect. Have it running as I type now. RPMS come out good for a trainer,10,000 with a 10x6, on Byron 10%. Will switch to 15% and may go to a 11x6. I would like to post pictures of my Tucano and the Hobby Star but every time I try it comes up with a thing saying the picture is too large. How do I reduce it? I'm using Windows XP. Thanks; Jim