So for the past year and a half I've been playing my HD through the front of a solid state stack. I purchased a tube head last week, a Bugera 55watt V55HD head. While some may hate on the Bugera brand I'm okay with it as the value was right at a little over $200 for a used all tube head. Long story short I like the tone of the head along with my tube screamer. I don't own a lot of pedals so I needed to get my HD in the mix and the best way I've heard about is the four cable method. I hooked it up as stated in the line 6 instruction video, but I was greated by a TON of noise. Perhaps I need to buy some new cables. Noise aside the four cable method added low end to dream about. Palm mutes just bleed low end.....but I had so much noise it almost sounded like I had a delay going on, and I didn't. So questions: -Should I be using the amp PRE models with the four cable method? -Does the four cable method cause more noise, or should I invest in better cables? -How do I tell if my effects loop is serial, or parallel? And does that make a dig difference for the four cable method. -My tube screamer/V55HD combo screams, but when disabling the amp sim and using the HD tube screamer for FX I don't get the same reaction. What gives?