I’m waiting for them to bring out a digital tyre lever gauge [emoji23][emoji23][emoji23] It’s amazing what you can learn from the old blokes if you just shut your mouth and listen. A mate of mine is mad for minis, the real ones. They only have 3 mains caps compared to newer 4 cylinders with 5 therefore they are susceptible to crankshaft whip and cracking. The old school trick is to have a bigger clearance thrust bearing on the bottom compared to the top. I guess they know, considering they spin them to 10,500 rpm and they stay together!