i have dropped the standard linkage bar out of the rear end, and swapped the custom longer one in.
it is now sitting approx 50mm higher at the back, swingarm/chain, sprocket alignment looks good, no huge angles.
but, the bike leans at a decent angle now when using the side stand, (needs lengthening)
when i painted up the bar clamps, i painted another pair at the same time, to add in as bar risers (20mm)
(that's why there were 6 in the pic above)
i found 4x longer Unbreako Socket head bolts, 12.9 grade, in my bolt collection.
i have the bars and clamps sitting back on loosely now.
i sat on the bike and it feels pretty good at that height now
here is a comparison shot of the longer rear linkage bar against the std one.
and a pic on the bike loosley put together.
a few bits still need cleaning/painting, eg the swingarm, the brake drum stay, the brake actuator rod.
the rear shock, and maybe a couple of other bits too?
here is the new height at the rear, the forks might need some longer springs fitted next ?
now i'm going to pull it apart again, to clean/paint etc and do a final reassemble