Ugh, another broken mount. Poly-Locs?

I wanted to get some opinions on this if I could. The problem I'm having is I keep breaking motor mounts, with the one I discovered tonight being the 4th. Even though I have a torque strap installed I keep breaking them for some reason. Obviously this is getting old, so I'm considering the Schumacher Poly-Loc mounts that have the internal structure to keep them from splitting.

These here:





A few pics of my setup so you can see what I'm talking about.








The concern I have is I'm afraid of breaking the block. See how it pulls on the single rear block lug? If the mount doesn't break, what next, right? I certainly don't want to break the block, but replacing the stock type mounts is getting old. What do you think? Am I over thinking it?