Here's a view with the lightened flywheel and prop adapter installed. Carr Precision did this work for me. BTW, I won't be needing these anymore, so if anybody would like to have them, email me.

These engines do have 8Mx1.00 thread. You need to be careful, since there is another coraser pitch 8Mx1.25. That is 1.00mm per pitch vs. 1.25mm per pitch.