I recently picked up this buggy (used, but new to me,) and am very surprised as to how good it is. I have always had xrays (xb4 13, 14, 15, then updates to the 15 to make it similar to the 16 and 17.) The eb410 is simply easier to drive fast. It doesn't feel on edge, lands much better than the xray, and parts are much cheaper.
I moved the rear shocks forward, and given how many racers have done this, I would suggest that tekno offer optional arms for the shock forward position to correct the wheelbase and allow for the droop screws. They could also mold the sway bar mount and offer a kit for the conversion including the rear carbon tower ($35 or so.)
Great job tekno!!