The best way to handle this is to work on about 3 games at the same time. Figure out what your good number is. So say you're working on a Ms. Pac and need a fuse block, order it and anything else you need, and while you're waiting for the parts start working on your Defender. By the time you figure out the Defender needs new ram, you'll have your fuse block in for the Ms. Pac Man, and can work on it while you wait on the ram... etc.