I plan on using this for measurements
No I typically follow the instructions. But all I had was narrative and a couple pics in my book.
Ok. Interesting. I will try itWhile it can't hurt to measure the height I judge it differently. Get a paint stirrer or similar about 1/8 inch thick and set it under the lower corner of the w/s frame right against the post. You want this clearance between that corner and the fiberglass body so you don't end up w/ squeaks as it grinds it's way into the body. BTW you want that same clearance posts to body for the same reason-squeaks.
Np I did not cut them.Would you please let me/us know how long the arms are before you cut them off and then how much you end up cutting off to get it fully resting on the body.