I sold my Mavic cutting kit to Jenna,she works with Bike Pirates as well as at the shop up on St. Clair and Vaughn. The Mavic cutter is a 45 but not sure if chamfering would help the YST...don't think it would.

The option of cutting to Ital is an option but as most Ital Cartridge BB's are for a 70mm shell that would likely cause a problem. Loose bearing BB cups in Ital...68mm spindle. Wouldn't be that hard to make happen.