I ran the chopped 700's for a few years and this was the best I could come up with. I used the Audix Micro MC mounts with some o-rings for support. The Audix mounts, as you know, are a little small (for ~12mm mics) but they will (can) work. I will admit that I snapped one or two Audix mounts on the clamping part, which is why I started using the o-rings. However, I was able to use the snapped/broken mounts successfully because it gave more room in the C-clamp for the mic. A little filing underneath the C-clamp of the mount on either side of the stem allowed for small "valleys" for the o-rings to sit in. The mounts were attached to a vark bar, which you can then shockmount with the lower delrin bar. To minimize size (not shown in the pic below), I shoved the vark bar through a
Superlux mount with a few extra o-rings on the side it stayed snug and tight.
Here's a pic (without the Superlux mount mentioned):
Here's a pic with the Superlux mount:
You could also use the ever-so-popular DIY PVC option. With a few tools you can easily fashion up a fixed length/angle bar like the picture below, although I preferred the methods above.