I think that your tone guru is crazy!
Seriously, the Twin is known for being pedal friendly (as is the HRD). Anyway, check this video out and see if this is more of the tone you're looking for http://www.youtube.com/watch?v=bAnk9MERLms
. If the OD pedals are sounding raspy, I would play with the Twin's EQ and bright switch. For example try the Butler pedal first, with the bright switch off and the treble at 5. You also might want to try running the mids low (1-3) and using the bass control judiciously to round things out in conjunction with the treble.
For me, I use the Wampler for that slight sustaining OD kind of sound (kinda like a Robben Ford/early Larry Carlton vibe) and the BB for "heavier" stuff on the clean channel of my Pro Tube Reverb. Other guys really like the Fulltone OCD pedals (never tried one), GT-500s, and the Hermida Zen drives for more of a Dumble kind of vibe. The Esctasy is Brian Wampler's take on the Dumble vibe. Anyway, when I play live, I run two amps (along with a Radial a/b box) - either the Pro Reverb for clean stuff and my baby Plexi or a Mesa Boogie for everything else. I used to run a Mesa Lonestar classic with the Marshall with very good results, but it didn't sound like a Fender (but was very close). Actually now, I'm seriously considering snagging a Twin, put it in a head shell and gigging it with the Marshall.
Let me know what you think of the clip.