Sidestands
I rode a Rapide in IoM in 1975, and it was exactly the same as my bike 30 years on. I remember parking in Ramsey facing "the wrong way" because when THE bicycle was in the gutter and the prop on the road surface, it was at a safe angle.
Skipping lightly forward, I had the casting machined to alter the angles, and an extension on the foot. It was just about acceptable if the bike was unladen, but mounting and dismounting when laden was fraught. It was about 50/50 whether I'd get off leaving the bike upright - if barely - or have to crawl out from under when it went over (slowly, as a great ocean liner might) when I was half-way off. (My wheels are standard 20" front, 19" rear.)
So I bought a Neal Videan stand, kept the originals in place lest i need to take the front wheel out on the road (at home i use a screw-jack) and life was thereby hugely improved. I don't doubt that machining the pivot casting, and or extending the leg has worked for some, but it didn't for me. (The fact that I don't straddle the bike with quite as much clearance as Peter is certainly a factor.)
The good news however is that if one decides to try, and I was glad I did, and it does NOT work out, there's a fall back option, and one is no worse off.
Tom