Nope...used a ring spreader. I did spiral the oil scrapers on though, but those are thin and flexible. Never had trouble with those before.

So do you think if I can get some vacuum on the crankcase and drop the blower I could get them rings to seat?

Also, what oil should I be using to break this thing in? I'm currently using a non-synthentic 10W-30. Maybe go to straight 30 weight?