All: Looking for a volume pot for my vintage '70s JBL pre-amp. Here are the specs: Dual 10K audio slider pot; 80 mm from "hole to hole," and 20 mm wide. Additionally, the pot must have taps to enable the use of the preamp's loudness control. I believe the original supplier was a company called ALPS. I would greatly appreciate it if any forum members can help me source this part. Thank you.