Scott,
Not too many were built with Columbus. Very few "special orders" came thru while I was there. All Masi track frames of that period would be Columbus.
I've posted 3 responces to the tubing/3ttt posts within the last hour and I've seen none of the responces I've CC'd to the list appear. Are you getting my responces on the list? Something tells me I'm not getting through.
Here goes another one. You should get two of these.
Brian Baylis
La Mesa, CA