Enlarging Draft Tower Shank Holes

[Kmar48]

I have been using a two tap tower setup on my mini-fridge kegerator for a few years now with no problem. I have always used Perlick faucets on the standard shanks that the tower came with. I recently purchased a set of new DuoTight tower shanks (for Intertap faucets) to convert my whole tap system to push-to-connect fittings. The new shanks, however, seem to be slightly too big to slide through the draft tower holes. Has anyone else had this problem? How would I go about trying to enlarge the stainless steel tower shank holes by a millimeter or two? Thanks

 

[Zemillard90]

Do not have a draft tower, but I would suggest a step drill bit to drill through the stainless.

Good luck on the upgrades!