Unfortunately, I didn't want to put more money into this, and since I had the Dremel tool already, well, here we go!!!!

I took off about 3/32 of the front and rear edges of each mounting lug, and that lets the stock mounts bolt up perfectly. After looking at the MK and DB mounts, I realized the problem was with the design of the ST 2300. Just too much mounting flange, so now there is less (on mine).

It was scary, but only took about 15 mins., and the results look pretty good!