Trying to learn the inner workings of my 1911s. After checking out many threads here, opted to buy the 10-8 block. Only problem: No accompanying instructions. Online search turned up one short video, that showed how to use the block for working on a thumb safety. That was handy, but with all the combinations of holes in the 10-8 block, it would be nice to have a guide for new users. For instance, I know the block is supposed to be useful for checking sear and hammer engagement, and also for disassembling a mainspring housing. I just don’t know how. So, can anybody point me toward a user’s guide, or video? Or even just provide some written pointers on various functions of the block? Thanks.