Thanks. I've just noticed that when I put the bolt, spacers and rubber together, the bolt doesn't protrude through the top, so it's not possible to get the top washer(s) and nut on without compressing the rubber in some way first, or shortening the long (bottom) spacer. My spacer is 1 and 7/8" long. Is there any disadvantage to shortening it by, say, 1/4" or 3/8" or something like that, to allow me to get the washer(s) and nut on? That would seem the obvious, simplest way. AWJDT, I think you said something a while ago about having to shorten a spacer?
Also, the Draganfly website drawing shows a variety of small washers (plain and spring) under the top nut. The BSA service sheet no.64 (in Rupert Ratio) shows no smaller washer, just the wide washer which sits on top of the rubber, with the nut tightening straight onto it. I'm guessing the service sheet method is fine? Or either way, I guess?
Phil.