So last week when I replaced my lowers, I discovered a shredded (just left side) boot on one upper. It's already a Moog with the while arm. I bought one of those repair job boots and put it on, but it's total crap; can get it to seal it stay in place around the top. Joint is good and I just had an alignment, so was hoping to save the money and hassle of getting a whole nother arm. I could get just the joint, but for the life of me, I don't see how this one comes out.

Any ideas on how to repair the boot and save that joint?