Stronger connectors for Ultimate DM Screen

I couldn´t get the normal locking bolts of the amazing model (Ultimate Dungeon Master Kit) from about30cows to work on my H2C. 

Therefore I quickly designed a version which uses 4 x M4x10mm bolts and 4 x M4x4x6 heat inserts. The dovetail is 5mm thick, thats why the heat inserts need to be smaller than that. This does not change the main body of the DM Screen at all, just adapts the dovetail connector. The normal threaded hole stays in the model, you could also still use the original connectors even after putting in the heat insert.