The pins look to be more than .070" difference in diameter, according to your pic, and the other pic showing the big bushing the small bushing, and the sleeve you turned shows that too. I get what you're saying about the axle and why that wouldn't be ideal, but the bushing numbers don't jive. Unless I'm lookin at the wrong pics, seems the p30 bushing is already bigger than the od of the smaller one. Whatever, it looks like a very viable solution.