Chick Vice Soft jaws - for system 5 vices

I'm at the spot where I'm interested in upgrading a hodge podge of M series double lock vices and E series tombstones to the current system 5 series. The towers have seen their day and need rebuilding anyway, and Chick has a great deal where you buy 1 and trade in the old one and get a new one free. So effectively the vices are half priced.

I've made loads of soft jaw sets for the M series double locks, but the new system 5 has a somewhat unique hold down.

We go through loads of soft jaws for our Kurt vices, which I used to make, but for around $10 a pop from Monster Jaws, it doesn't even pay to make our own soft jaws (sure wish I knew how they could sell them for so little).

Does anyone know of a place that makes aftermarket soft jaws to fit the system 5, 6" wide double lock vices?

Or any place that sells the custom form tool to whittle out the slot and retention divots?

Thanks,

Stu