Can anyone here provide me a measurement for the bolt pattern where the Michell arm boards attach to their turntables? Specifically, I'm looking for the length between the bolt holes, center-to-center. I recently bought a Jelco arm for my Thorens but I'd like to be able to use it with my AS Wow XL if the desire ever strikes. There are some Michell-to-Jelco arm boards available on ebay that I believe might work for me but the guy doesn't seem to keen on helping me figure this out and has trouble understanding my question. The arm board currently on my table has a 1.5" bolt spacing. That's what I'm hoping the Michells are.