Using the paper templates supplied with the plans I made the first holes that the throttle pushrod that connections front and rear will pass through. I then ran string from the front throttle to the rear to see where trimming was necessary. This step isn't particular helpful, because once I installed the pushrod where I need to trim seemed to change alot. I have everything roughed in and getting close.
Templates still in place and note the yellow string.
These holes get alot bigger in the end.
Push rod roughly in place, but not hooked to the rear throttle yet.