Star BM parts

I am awaiting the arrival of a Star BM. I have read Mr Camp's critical assessment of it(which is one of the main reasons I decided to buy it) as well as anything else I could find, and everybody is saying that replacement parts will be hard to find shortly-especially firing pins and sears. Does anyone have drawings with dimensions of these parts for future reference? If I'm like everyone else, I figure I will really like this gun and will want to keep it running. Thanks