Quote from: Enzo on April 15, 2016, 11:42:18 PM
Where in the world are you?
Look on the rear of the old part, you will see a number in this format: 70-202-23.
I made that number up, so it is a coincidence if that is what is printed there. That number is the Crate part number. If Crate still has them, any Crate/Ampeg parts seller can get them for you. I recently sold all my old Crate pots, while clearing my shop.
Enzo,
I'm from just outside of Nashville, TN in a city called Murfreesboro (assuming that wasn't sarcasm).
No...I don't live under a rock. 
I've actually already emailed several CRATE contact emails and "Authorized Service Centers" looking for the replacement pot.
No responses yet. That's why I put the request out here.
And talk about my crappy timing...sounds like you would have been the perfect source for my parts problem.
Worse case scenario...I match it up to something from Digi-Key, Mouser, etc.
PS. The amp was given to me by a friend. I replaced the 4558 op-amps...and now it sounds great.
Thanks,
Bill