I think the tighter everything fits, the better, to a point.I wish I had a lot of pieces to work with to find the best tolerances.Somebody mentioned cutting a grease channel in the bushings, and I think that would be a good idea. The only concern I have is that my sleeve fit so tight, I'm not sure it is getting greased good enough.I'm so paranoid about it that once every week or two, I'm pushing more grease into it.If your bushings are pressed into the arm, your good to go there. If you had 1 or 2 thousandths between the bushings and sleeve, and a grease channel, that might be the best. I'm just guessing though.