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Sure no problem. I made the tracking part based on one that is selling on ebay. (last pic below shows that one) It's just 2 pieces of 2" x 1/2" steel flat bar that I made into a hinge. (I used spring pins on mine, the ebay unit has a cap screw)
The knob I made has a long threaded shaft that threads into the square tube and comes out the other side making contact with the hinge allowing it's pivot to be set. I have some medium duty thread locker on that so far keeps it where I leave it but if it becomes a problem I can add a lock ring under the knob.
At first I had a minor problem with tracking but it was due to my platen wheels not being centered with the crown in the track wheel. I put a 1 degree crown in both the tracking wheel and the drive wheel.
Gave it a good test the other day and the belt stayed centered nicely.
I read somewhere that a lot of tracking problems come down to the tension on the belt. Maybe you need more. Be sure your wheels are all centered with each other too.
Hope this helps!
Bob
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