so, when i saw my ratchet had that hole on his arm, i immediately grabbed the EMP off my lockdown and tried putting it on, but one problem, my lockdowns blaster doesn't have the necessary holes to be heldin place by rachet's arm. i haven't seen anyone mention this before, anyone else have this problem?

 

The peg in Ratchet's arm hole is too long so the spring in the EMP pushes it off. Trim the peg down and the EMP will fit and stay, and still activate.

 

I had that exact same problem and Peaugh suggested the same thing to me. It works great, you don't really need much of a peg at all to activate the blaster function so go to town.