joesmith, if your guess is correct it's not clear to me whether we're fabbing a complete tensioner or possibly modifying one made by a third party. several days back, while much of the assembly of that blue tensioner was happening, it was just out of frame on that cam, so i couldn't see all the work they were doing. how much of it did you catch?
here's a shot of the two frames in the fab shop right now, with the newly fabbed steel circled in green: