Kill Em All 102 said:
I'm currently running a Gibson SG Standard with a 490R and 498T. I've used an Esp Ltd V with active 81's in it but it only did so much to increase the Gain. I bought my Recto brand new 2 years ago. All the Tubes still burn great.
Ok, now we're starting to get somewhere.
What cab are you running? What sort of a sound do you want?
I have a Les Paul Standard and in my experience, the stock pickups don't do great metal. Like it does a thick ballsy rock, especially when cranked, but it is just lacking in the super saturated tones. The SG will have less low end than the Les Paul so you won't need to back off of the bass quite so much to control the flub.
With the information you have given so far you might either want to a) run a boost to take your tone into Metal territory or b) swap the pickups out for something much more active.
One final question: Does your amp sound different than when you bought it. If you've been pounding on your amp for the better of two years, there is a distinct possibility that a tube or two might be wearing out. I've had tubes dead almost right out of the box, which is an experience many others have had as well.
Also, you might want to try a custom tube kit. Many of the guys here pick which preamp tubes they want to run in each preamp socket. That can apparently greatly reduce the much and tub of the tone. You can also try EL-34s for power tubes, since they are much more aggressive. The downside is that they wear out faster.