We hit another hiccup when dropping the block onto the pistons, one of the oil scraper rings caught and damaged. Its really a two an job, but due to social distancing it had to be done alone. Also when the block is rebored, it loses a slight chamfer at the base of the liners which help the rings compress as they enter the bore.
Not a big problem normally, except the rings for these pistons are no longer available... oh well, I never liked the idea of using those (slightly) used pistons anyway, so now the engine is getting a new set of forged pistons instead.
On a more positive note, I've bought a mint front end from a 2001 Yamaha R6 which a mate is breaking
.. its 43mm forks, calipers and discs will be used on the Zed, in place of the 41mm Suzuki forks I've used so far. It means a new set of billet yokes, but that's ok, my mate Jeff has a few sets of half finished billet yokes, one of which can be used for the Zed. While work has started machining the pieces to make the billet clutch cover and points cover.