Ibuild4u. Ah ha! I went ahead and purchased a stubby 15/32' drill bit from ebay prior to reading you post. I appreciate the information on drilling. I believe this is what you are talking about.
http://cgi.ebay.com/ebaymotors/ws/eB...AQ:MOTORS:1123
Seems I really need the perfect circle for the cold roll bearing sleeve. 39.20mm long x 16.96mm outside diameter x 11.90mm hole. I drilled my other attempts with a 31/64 and did a 12.34mm. Way too big. The aluminum chunky spacers don't really have to be perfect since they are just spacing out the overall width of the swingarm pivot joint.---Hard to explain.
I will take your advise and center drill, than pilot drill, then bore it.
I found a guy on ebay that can cut down a reamer for me to fit my 1/2" chuck and get rid of some of the extra length.
I only need to move through the 39.20mm, so I will get a hold of him.
The guy that made my spacers, I measured it and it was 12.34mm like what I did. I didn't think much of it at first,but that is too much play for the bolt that slides into it to be moving around as the swingarm goes up and down!
-fpm