There was a AD-20 on sale on ebay a little while ago that had the perfect knobs on it, I was going to email the seller to ask him where he got the knobs but I forgot my ebay username and password and was too lazy to start a new account (plus It may be good for me not to have an active ebay account)
Ive tried ratshack for knobs but they didn't have any that I thought would be good.
I would love to know if anyone finds the perfect knobs