kaeverens
commented
3 years ago redsigned as suggested.
also, removed the bottom middle screw hole because it was in a tricky position to use.
redesigned the screw holes of the other bottom ones so they use conical holes.
the trusses are designed to have 2mm tops from one side to the other, but of just one track. the truss needs to support both the track it is screwed to, and the track just next to it.
solution: redesign truss to be at least 4mm across on top, with screw hole moved in accordingly. also, add a "lip" so the other track (the currently non-supported one) is held tighter to the screwed track