Well, I've been posting my progress on the SeeMe forums, but thought I'd share here as well.

I've finished my design for the dual E3D V6 mount for the Rostock Max. It'll allow for height adjustment on one of the hotends, making it easier to level the two nozzles. I'm just having an issue with shrinkage. I've printed several iterations, but all parts are just not fitting correctly. I have a few more things to try tomorrow, so hopefully I get it sorted. I may also try in PLA... less issue with shrinkage perhaps. If only I could get this made in aluminum.

Working on a layer fan as well, though that's becoming even more aggravating.

In any case, I'll share the STL's once all is finished, but here's the final design, for now: