Hey. I may be able to help without even needing your xbox.
Have you tried changing the cap value? The onboard is 220pf, but boots best with a 270pf cap. I've done half a dozen systems with the "x360glitch" chips you can buy from dealextreme and I've always had to change the cap.
Also, did you successfully program the glitcher? These are a little different to program.
Also, just follow the same wire lengths as TX does for their coolrunner and you'll never have an issue.
I've had people turn their noses up at systems I've installed the x360glitch in, but with some work, you can get them booting consistently in 5-15 seconds.