When was the last time you read an instruction book. No one ever reads an instruction book

Besides if we were all experts at doing this type of stuff, we wouldn't have forums would we?

So, that leads me to two dumb questions for all us non-experts:

1. Do we need v-blocks to measure the tolerance or can it be done in the crankcase?

2. What is the relevance of the 63mm, 33mm and 7mm measurements in the crank specs?

Thanks

rip - "the town-idiot"