See the post(s) in General Discussion "Reproduction Endura bumpers are horrible" - unfortunately, GM discontinued the repair kits you will see pics posted of, but there is a guy out there doing repair work that looks to be a really decent deal.
Yep, I saw that thread, and have previously seen how bad the repro bumpers fit.
Unfortunately, based on my location, it's too costly to ship my VE3 back to the States for restoration, so I am quite prepared to do it myself. But because of the time it will take me, I'd really like to hear first from someone who has already done this, so I know I'm using a suitable product for the repairs. Failing that, I'll take my chances with the 3M Automix, and let you guys know via this forum how it works out!