Alternate Z bracket- I goofed when I ordered belts. My frame is stretched 30mm, and I really need a belt ~1060mm in length. I ordered and got 976mm. TOO SHORT! Not many options… Its not long enough to even get around the motor or pulley.
I decided to make use of an additional crossbar and put the tensioner on a revised Z motor mount. Z Motor rotated 45 degrees to get the tensioner closer to the spindle. I shoujld have also added a second mounting boss on the open side.
I will put the model and .stl in my Community Mods folde in case anyone else ends up with similar need.
Shorter belt is always better, so this is a nice improvement 
Good solution. Just a thought: if you move the idler a little more to the right, then you could loop the belt a little more around the pulley, increasing the number of teeth in contact with the belt. Obviously not necessary, since yours works. Just a suggestion.
Nice engineering, good to have a working 3D printer to build yours!

