Man... I'm the king of partial information.

It's a DT line (Cortland Sylk). The rod is a bamboo 5 wt (he got in an auction with the Anglers Club in NYC... I think), and he has an antique reel (1930's era Hardy) that he wants to put on it. The problem is that the line doesn't fit on the reel, even without any backing.

I suggested cutting it in half (or at least cutting off on of the tapered ends)... but just wanted to ask around if anyone's ever had problems post-trimming this line (I know nothing about the line).

Thanks for all the suggestions/responses... I linked him to this page.