I am in the middle of restoring a nice Premier Bass Drums with African Mahogany shell. It's missing some triangular shaped mount for the Tom arm. I've looked around and I've noticed there's a few variations of this mount, but not all sellers online will mention the dimensions in the description. The hole spacing for my one seems to be around 52mm, or about 2", and it's an equilateral triangle. I really don't know what mount I need to buy for this thing. Any info would be greatly appreciated.