Just cant seem to get it right!!

[chris850]

Ive tried over and over again to fix this model in Microsoft model repair, tried changing some stuff around in sketcup with the model itself. Tried slicing with slicr and cura, I keep getting the same problem, dont know what Im doing wrong. And it just this model, everything else works great, just this one giving me problems, so Im asking some of the pro's here do you see anything obvious that could be wrong that Im missing?Quad_26650_V3_(1).obj