I thought the height of the cylinder sleeves was adjusted with ‘shims’. Using a lathe to modify them seems rather excessive.
When my engine was rebuilt a lathe was not involved as documented in a recent edition of Floating Power.
There is also no need to use the cylinder head to hold the sleeves down. Bolts abd washers do the same jopb and give access to fill the block with water to do carry out a leak test to ensure the seals are good
