I second Kwai's idea.
Seriously, the top comes off my truck and stays off all Summer long usually, and if I plan on travelling more than 20 miles from home, then I put the top bows, window frames, glass, and canvas (or paulin) in the bed or in the tool box I have back there. So far, everytime I have had it with me, its never rained.
Remember, the tops were only really intended to be removed for transport. So I doubt that all the stuff was ever placed exactly where the manuals said it was supposed to be when the top was off and the windshield down.
"Free advice is worth what you pay for it."™