Fixed the problem with with tabs breaking off and tightened up the fit on the internal parts. The cap now fits snug to the body. You may have to sand the flat surfaces of internal parts to get the right fit from your printer. Also fixed the crystal as my slicer didn't like the original. Modeled in Designspark Mechanical off dimensions from the original file. Rotate the STL files to your liking for printing..I just saved them as they were assembled. Printed on Zortrax M200..