Taz 4 X belt retrofit bolt on tensioner

This is a belt tensioner that will fit the standard Taz 4 X Carriage frame. This should also fit the 3.2 and the 2 frame. not sure about the Taz 1.
It's a simple screw based tensioner. I was only able to fit it in the
inverted position, but it liiks like it will work fine. Experemental at this
point, the usual disclaimers apply