Those extra webs on the DART block interfering with the Energy Suspension mounts is talked about quite a bit on here, and happened to me too on my #7750 Roadster build with a DART 347 build. My engine builder also said to notch the mounts, not the block. They ended up looking just like yours and solved the problem. He said the same thing. Why would you cut into a couple thousand dollar block and not a pair of hundred dollar mounts? Agree as well about that rear transmission mount. It's purposely designed to go multiple directions to accommodate different engine/trans combinations. Which I like compare to the A-frame used on Roadsters. But the instructions are confusing and also in my case didn't work. Your final alignment is exactly how it should be.