[Spenny_b]

My 2p....if you're rebuilding an engine that hasn't gone too well thus far, you'll be wanting to go the whole hog and measure everything....bores (in X&Y) at the positions that are described in the various reference docs...you'll also want to measure your pistons.

If it were me, I'd be throwing a healthy amount of cynicism at it, and make the assumption that it wasn't put together with a thought-out plan of component weight matching (or even the correct pistons back into the correct bores, as they were taken apart..)

Inspect, inspect inspect....now is the perfect opportunity, unless you have good reason not to...

Just my humble...