I am using a 9 speed chain. Sram PC-971.
I know some cranks use a very thin washer between one of the chain rings and the crank spider. Mine doesn't have these. Could this also possibly be an issue? Could also be a frame alignment issue? I didn't do the Sheldon Brown method for cold setting, and I currently just spread the frame to get the rear wheel in.
As for the year, it's been a topic of some debate, but we have discussed it a few times already. It's a Canadian market version, I'm judging date by decal style and part date codes. It could be off by a year or so, but it's not really relevant, but it was branded as made in italy, has formula two tubing, and has an italian BB shell.