Wydendorf having delivered me 18 sleeves, I was able to measure one that remains: 25.45 mm
I also measured the diameter of the reamer for the block: 25.37 mm
The reamer that is used, after having pushed the sleeves into the block, to obtain the correct internal bore measures 22.21 mm and the pushers measure 22.20 mm.
We see that there is 0.08 mm of clamping between the block and the sleeves, which is a lot and only 0.01 mm of clearance between the sleeves and the pushers, which is little.
In fact, as the reamers are used with a hand-held electric drill, the bores obtained are very slightly larger than the reamers and the reamer for the block having already been used for 16 housings is perhaps very slightly worn.
If you need custom sleeves, maybe if you ask Marlinjack very very nicely he will agree to make them for you and you can be sure that they will be accurate to 0.00......1 inch.