Incidentally, if you have an EPROM burner, you can use C64 EPROM carts perfectly safely (as long as you burn it with a MAX ROM of course, but you can find them on line). The only difference is the C64 has grounding pins on each corner of the slot, but the Max doesn't, it only grounds on one pin, so you may need to put a wire between the Max's ground pin and the EPROM board's ground pin if it's not in the right place.
That's what I do, anyway.
