[Wolfman77]

I thought you coould restrict components to just bases, but I could be wrong. If not making them excessively large, like 10,000kT, and using a mount to fit them to a resuply base. For example: make a new base size of 525kT and a mount for the solar sail comp family that is oversized, restrict the mount to fit only 525kT hulls, and set the component size to 1-5% (100-500kT), depending on the amount of room left after C&C comps have been added and how many you want to let people fit to a hull. You can restrict just about any component to any single size hull using this method.