Well, that's a lot.

I'm glad that you are having success. I can see that you are analytical and diligent; two traits that will serve you well in this endeavor. I would encourage you to take your time so that the lessons you learn are not lost in the progress. But, you know you better than I so if you can absorb it all then more power to you. At the risk of reopening a contentious topic I'll say that I'm glad you are taping the spine. To me it's a no brainier but whatever.

I never used a protractor but 30° seems a little steep to me. The rule of thumb is twice the thickness of the spine but I think that is a little subjective. We all have to find our own comfort level. I think I shave at a more acute angle than that but I couldn't put a number on it. As far as coordinating skin stretching, it just takes time to get the coordination for that and other skills. Be patient, it will come. The bleeding will subside some also but the fact that you mention it rather in passing tells.me.that you are going to push through it and be successful. Keep it up.

I have never seen a bearing or bushing on a pin but if there is one under there please post pictures as I'm sure I am not the only one who would like to see it. Not trying to be a smart Alec; you just don't ever know what you are going to find if you go digging.