How much space is required between the back of the propeller and front of the cowl?? I didn't see any measurement in the manual. Any tricks to cutting out the holes in the cowl??

it tells you in the manual, Look at the pics in the engine mounting section.

I didn't see any measurements for the cowl. It looks like it might overlap about 1/2 inch but nothing solid. Let's say it as an XYZ arf with a cowl, how far should it be from the back of the prop, 1"?? More??