The bush is usually made from solid phosphor bronze or steel with a white metal on copper or phosphor bronze liner. The surface lifting you describe is unfamiliar to me but I suspect is undesirable! You should check your crankshaft journal for ovality; ovality up to 0.0005" (1/2 thou) is acceptable, maybe up to 0.001" for steady use is OK, anything over 0.001" I would get the crankshaft ground back to round. I would advise using the solid phosphor bronze bush which can be purchased in various undersizes. As it is solid you can line bore it to suit the crankshaft size without needing to stick to the 010 graduated undersizes. The bush will need line boring. A good engineering workshop can undertake this for you. They will need both crankcase halves and the bush. I dare say they could fit the bush if you asked them. I usually do this job myself with an expanding hand reamer and a guide working from the left hand crankcase. It is a bit tricky and time consuming - not everybody would approve of this method- but I have bored numerous bushes with excellent results.
