I am back in action!!!
R2 on the tube board was open, replaced that and seems that all is well.
I have the same voltage at both R1 and R4 (~184v).
I'm just going to hot glue between the tube socket and that shield wire and get everything back together. Thanks for the help Rnolan and MJMP. Thanks for the info on the tube voltages, without the help (and the schematics and info on this site) I'd be out shopping for a new preamp.
I was a little bit looking for an excuse to buy something new, already had my buddy lined up to have it sent to his house (under my wife's radar). But now that I heard my MP1 again, I know I don't need anything else.
Rnolan, yah the amp and preamp are completely independent, just funny that the amp was giving me crap on and off but now it consistently started up when it was of no use to me. It'll act up again now that my preamp is working, haha. I've read about the lamp and fix, it just hasn't completely crapped out on me so I haven't done anything about it. I had checked the FX loop to make sure I was getting the same results with it in or out and had the same results, hadn't mentioned it
Again, Thanks!.