Been away for a bit but got home in time to finish up a few last minute requests. I now have a Varia mount that can be used on the new Madone SLR series. It centers the radar on the seat mast and reuses what Trek calls the Madone SLR Reflector Bracket Rear (Trek Part # W557631). These normally come with the Madone SLR as they are the reflector mount. So far only the Varia is supported but soon should have a Cycliq FLY6ce adapter for the same mount. It even uses the same screw used to hold on the reflector normally mounted there. Easy to use as all you need to do is unscrew the reflector leaving the bracket in place on the Madone then screw in the adapter.

I should have some picture by next week.

I also now have a technical drawing of a Chinese made Carbonda CFR515 aero road frame seat post that I will make a few mounts for. Since the Chinese are fond of copying everyone's designs, I am sure this will fit any clones of this bike model too.