I could not actually tell you how many times I installed and removed the top cowl, but over 6 hours of marking, triming, re-installing and marking I eventually got the top cowl to sit back in its origianl position.
The paper clips give you the gap from the top of the cowl to the edge of the baffles.
Next step, cut and fit the rubber baffle material then (sigh) its pretty much done except for some additional bracing.
I can take it off for the final time and paint, then re-install for the last time...yippie
Left side trimmed to give 1/4 inch gap
Looking at the rear with 1/4 inch gap all the way across