Despite the lack of space in the garage, I decided to press on and try to get the frame back onto the engine today. But first I assembled the rear bevel box and swing arm, cos it was easy and looked like I'd done something. I also replaced the old drain / level plugs with stainless bolts which had their head machined to make them look a bit better.
Ideally an extra pair of hands would've helpful when fitting the frame, but I was working alone so I managed to bolt the front engine mount first, with the frame up ended, then it was a case of pivoting the frame down and bolting up the lower frame rails. This worked surprisingly well with no damage to the new powder coat. The only problem I hit was that the clutch arm on the back of the gearbox needed its adjuster bolt removing to clear the frame as it pivoted down. This little issue turned into a massive nightmare soon after..
It was all going so well, once the frame was on, I decided to remove a few alloy parts and bead blast / polish them before refitting..
One part I wanted to tidy up was the clutch arm on the back of the gearbox, its not that noticeable, but it all helps. Its held in place by a pivot bolt which in turn is kept secure by a split pin. The split pin was rusty and fell apart when I tried to remove it, ended up having to grind off its remnants, which still left the pivot bolt not wanting to come out. So I used a small drift and hammer to gently know it out. It was stubborn, but moved eventually, or rather it seemed to move. What had actually happened was that the casting it pivoted in on the gearbox cover had snapped. What I nightmare. I was shocked as I hadn't used much force at all, god knows how it had failed.
I don't know if the gearbox end cover can be removed without first removing the frame (does anyone?), if not I'll have to reverse everything done today to remove the cover and repair the broken mount. At that point, I downed tool, I was to annoyed to carry on today.