Yes, that's a good point about going there vs. him coming here. You probably learn much more by going there, but that may not be practical for you.

John, you might want to compile a list of questions from customers (ones that you need the guy's help to answer and ones that you agree are important questions) and fire away.

Here's a simple question I've always been curious about. Maybe you know. Maybe you could ask him.

When a customer orders 2 units in one order, do 2 different people make them at the same time or does one person make a unit and then make the second unit. I sometimes wonder if it saves time to order 2 units at once or if i might as well order one unit at a time back to back.