I did learn a lesson in machining on the first mount. I made a major mistake by not thinning down the aluminum block to closer to the finished thickness. This would have made removing the unneeded material MUCH EASIER. I've actually had to almost fight one of the endmills due to the depth I've had to go to get the end thickness I want. I may end up making another left side mount when all is said and done, all depends on if it holds up without bending OR if I like the finished appearance. Is it possible that I'm too picky