have you tried running a boost in front of the dsl to tighten it up (get rid of the mush) then an eq in the loop for a solo boost?
i used dsl's for shows a few months back and really liked the sound i got out of it with an od1 boosting the front end.
That's exactly the position I'm in (pretty much). The distortion on the DSL is just a bit too mushy by itself but with an overdrive in front of the amp it tightens up beautifully. The problem is that an MXR Boost pedal in the loop then can't boost the volume any further so I have nowhere to go with a solo, hence I'm forced into using a pedal distortion through the clean channel whenever I have a solo to play. For the moment I can't really complain as it sounds fine but what I really want for the future is an amp that will give me that tight and crushing distortion that I like without the need for an overdrive pedal to tighten it up further. It also needs to be able to take a boost for solos as well as have a lovely warm clean channel. Ideally I'd like to be able to sell the TL-2 and Bad Monkey and possibly the MXR Boost too and do it all with the amp but as yet I'm unsure which amp that would be. I keep coming back to the Marshall JVM because although loads of people tell me it's a jack of all trades and master of none, it does seem to have loads of distortion options as well as the ability to boost the volume. Even the 205 seems to have plenty possibilities while the 410 has more than most people will ever need. As long as the distortion is tight enough it sounds as close to what I want as I'm going to get.
I also bought a 1 year old Yamaha Pacifica yesterday for £80 so that I can transfer the Seymour Duncans out of my Soloist into it (should make it a really nice backup guitar for very little money) and load some Bareknuckles into the Jackson. From what I can gather, the Miracle Man will be really good for tight distortion so it looks like I'll go with a Miracle Man and Trilogy Suite set. Now I just need more money :D