The Primatos take a 107mm ISO spindle, which is a very hard item to find.
I'm exploring my options with the Miche cranks I have lying around.
1. Miche BB - cheap but mixed reviews
2. Phil 105 mm campy BB. Sweet, adustable, but $$$$$.
3. a JIS tapered 107mm BB, at the risk of buggering the cranks or getting a horrible chainline.