Block is off to be bore checked.
Stock is 3.898", its been honed. I thought the pistons would fit in a stock bore, They are 3.903" so only 5thou different. That is 0.127mm, so a tiny amount. I know honing may take some off, but I think its worth seeing its spot on. So I'll get it verified, and then bored if required.
The block is now at Banda engineering, they says its very difficult to remove so little. I know they will find a way.
Trouble is, it may only be 5 thou, but I guess things expand when hot, it could great more friction and more heat, and end up with some serious issues. Is asking an engineering shop to remove 5 thou the right thing to do? or do people just hope the rings compress enough?