You can see on the inside of this housing how the large sprocket and chain was wearing against the aluminum. Yikes. That would be a rude awakening driving down the trail when this gearbox finally wore through and POW
![Surprised :o](./images/smilies/icon_e_surprised.gif)
When I put tracks on, I try to match them up as close to a matching length as possible (tracks have 43 cleats and are about 106" long). Then when installed, I don't bother trying to get the tracks at even tension. I believe it's more important to adjust the adjustment bolts evenly.
Hope it helps someone,
Bruce