Hi, I'm George owner of Tempo.
We've been around since 2016 and we do have a pro racing with it as well . PM me, or email me at tempopowermeters@gmail.com. We've put meters on SRAM, Campy, FSA, Shimano, pretty much anything that has a flat back. What I've done in the past is if you want, we can give you a loaner to try out. If you like it, we can work with you to put a meter on practically any arm that has a flat back, any technology (aluminum, carbon, etc). We're thinner than other units so if you have a tight fit, it can help. Also, since we do place it custom, we can install the meter in a slightly different location if needed so it can fit.
I'll be more than happy to work with you and get you up and running.
If you want a new dura ace, We can purchase an Shimano direct. If you'd like, we can get you a brand new PM so you won't have to send yours in. Just let me know size so I can include it in the next order and I'll hang on to it. We don't actively stock Dura Ace so that's why there are none on the site.
I'm glad to see this thread,I'll post up some of the custom work on the site (customers permitting).
We pride ourselves in great customer service and we're proud of the unit.
Hope that helps,
Tempo - World's Most Affordable and Accurate Power meter!
http://www.tempopowermeters.com https://www.facebook.com/...ter-233979693610062/ Social : @tempopowermeter