I still have not finalized the M-Lok pic rail on the forend. I had thought that I would need a cantilevered section, but that may not be the case. The TLR-1 appears to be far enough forward on a section of short rail in the front slot.
(Far, I said far, enough forward to not break my fingers, that is.)
I may end up putting a short section of rail on both sides at the front, as they are not particularly 'snaggy"... AND it would allow use of the light at both 3:00 and 9:00 should that be needed. Once it is done, I will take an "after" pic.