Thanks to all for your suggestions.

After reading the posts above I decided that maybe I just wasn´t tightening the bold hard enough, so I pulled the motor out of it's support, got a good confortable hold of that sucker and applying leverage with a good wrench little by little the bolt went farther in. It went in smooth and felt real solid and finally the thread on the shaft came out the bolt.

I put everything back in place and finally was able to crank it up. I was gladly surprised by two things, first it fired up as soon as I applied the starter and went into a low steady "purrr" at low idle, and secondly I couldn't believe how quite that Evolution engine is. At idle you can just have a normal conversation confortably right next to the plane and even at full throtlle is not ofending at all like other planes some of my buddies have at the club that are just annoying when they are setting them up on the ground.

Now that I have taken all the fuel out I will again proceed to balance it, and that is it!!...can't wait for the weekend to go with my friend to the club to give it a try. I am glad to hear so many good comments on the Alpha.