All new parts, just assmbled, slight side2side wobble in chainring!!
Ohh say it ain't so.
Last night I had it all put together: my bottom bracket and cranks and as I spun the cranks and watched them I don't believe I noticed any side to side wobble.
Today I took the cranks off (to fiddle a bit with the bottom bracket set up) set the cranks on the spindle, tightened the crankbolt and there it was! A side to side wobble. Normally this wouldn't bother me too too bad, but as it is there is only about a millimeter of clearance between the chainstay and the underside of the spider right where the chainring bolts go. Sigh.
What could possibly account for this wobble? If it were a used bike I would wonder if my chainring was bent, but that's just not possible here...