EDIT: Okay I figured out the problem, the atiflash exe had too many characters, apparently dos needs the names to be short. I shortened the name and it worked. I extracted the bios and am working on it in dos.
EDIT2: Atom-15 was a success. So now I am full time on the CRT. I can't disable testsigning right? In the last few days signing out of it has locked me out of the crt (or at least the picture was a bit messed up on it) forcing me back to the lcd. Now that I've flashed it I'm assuming I shouldn't even try right?
I don't mind being in test signing but I wonder if that is what's causing Attract Mode to not run on the PC. Whenever I open Attract Mode up even from a fresh install in a differently named folder it just opens up with horizontal (slightly angled diagonally) white lines flying around on a black background. I'm guessing it's not actually sending 31khz anymore since I've used Atom but still feels weird to see. I've tried asking people at the Attract Mode forums and they're not sure why this is happening either.
Other than that I have tried changing the porches in the monitor.ini file by following the example of changing the arcade 15khz numbers to:
15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576 (original Arcade 15.7 kHz preset)
15625-16200, 49.50-65.00, 2.000, 4.700,
6.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576 (edited Arcade 15.7 kHz preset)
Basically changing 8000 to 6000, then I saved, I opened VMMmaker and clicked edit and okay and it made no difference. Is there some other step required to register that change?
EDIT: Also changed the title of the thread one last time just to reflect the kind of information contained within, apologies for the multiple changes along the way.