Okay so, apparently I am not as good at reseating socketed chips as I thought. When I pulled the chips again, I found I had bent a pin on the SID chip. Once I straightened it out and put it back in, the C128 started booting normally again.
I acquired a deadtest cart and it is on its 2nd run, the first time I let it run 10 times, with no errors except I am not hearing the 3 tones for the sound test. I wanted to make sure the cart was good, so I out it in my C64 and it ran 10 cycles just fine, and I heard the tones. It is now on its 2nd run with the same problem. I am assuming this means I screwed up my SID chip.