Replying to Mounting FKS on fat skis

So here's the deal, I have a pair of 109mm waisted skis (ninthward tha187s) and a pair of rossi FKS 185 freerides I need mounted on them. My local shop has the jig to mount FKS, but it won't even come close to fitting over the top of 109mm waisted skis. The brakes on the bindings might need a little bending but no worries there, that's easy. I'm just wondering how I can possibly get these bindings mounted if no FKS jig exists that can fit over these skis (don't want to do it myself, too risky).

Is there anything I can recommend the ski tech to do to get these mounted?