Given that you do not know what the Power Supply rail maximum loads would be, if I were in your shoes, i wout rebuild in a new skiff and buyba new Power Supply module so you are aware of the limits. You are much better off knowing your limits than using a module as a fuse.
I still have not been able to fing that info yet. It is obvious since the holes were predrilled tha Analogue Solutions from 2003 to 2007 was intent on the plastic housing to be used only with their modules. In fact they even state in the manual as a rather inaffective warning that they are not responsible for issues caused by modules from other manufacturers. Nice ... Not!
There are some fairly inexpensive skiff solutions out now including TipTop Audio's new skiff line.
I will keep digging though.