Improved MMU Loading Fork MK2 R4

I used Mr @Sapir 's 3MF file and reconfigured it to my changes.  If you use the attached 3MF file all you need to do is slice and print if you want to use his method of using PETG to print the model and use PLA as a support.  Or if you want to print using PLA and use PETG as a support.  

Give it a try and if it works for you post up your prints!  

The difference is very minute, but I think it makes using the loading tool much easier.  I tapered the front end of the tool so that the tool wouldn't get caught up on the buffer plates.