6-hole AMS support

When using AMS, etc., and the original 4 feeding channels are already occupied, it is very inconvenient to have to unplug one of the used tubes when external filament spools need to be used. This 6-hole support can protect the original AMS feeding assembly while eliminating the need to unplug the tube when switching to external printing materials.
The latter two holes are through-holes, where tubes can be directly inserted into the AMS connection point. The other four holes are a tight fit. This model has been in use for some time, and no problems have been found so far.