Ha! - happens to me all the time.
I'm see while I was changing country they talked you out of it.
Like - may just happen - now that I am versed in assembly/disassembly of cyl. But I wanna know what ea. moves does - so first I restart with new SIP road II.
Here's the quick pre Polini suggestion. Clean off the head gasket. Put another 0.5mm base gasket on to make 1.25mm. reassemble. Ride. Maybe up jet one size.
You guys are supposed to flag that for me before I pull the trigger...
Superstrong. Grinding out the cover takes forever.
Grinding looks like a total PIA - Ironically - considering how to mill.
Perhaps 6 pack.
Now if I can just figure out which way that washer goes on the crank...