Don't have one for sale, but have a few pointers.
1: Hockey pucks. I originally had these on my setup. Buy 5 off eBay, drill out the middle to the size of the centre shaft of the mount and hoof it back on the cross member. An old school trick, but it works.
2: BFI do a good range of mount kits for reasonable money. just got a set of stage 1 mounts and have yet to try.
3: Solid mount. Along with my BFI mounts I turned up a solid metal mount on the lathe. Same idea as the hockey pucks, just solid metal. Also have yet to try this but I fear it'll be too hard