I received the information early, there is no reason to wait until Monday, here it is.

Milton,

The bearing replacement will cost $560 for any size US Micro Jet engine.

Ehab,
You can order the generation three ECU and they will send it to you, it will automatically calibrate itself and it will run on airstart or electric start when the engine is upgraded. If you are going to run air start, I would stick with the generation one ECU, that is what I have been using since 1998 without any problems.

John