Mesa Boogie Mark III Effects Loop Mod.

Any Recommended Mods for Mark III effects Loop to Improve it?
My delay has a kind of ghosting woofy sound behind the delayed notes ( No Volume drops ) , It is a DD2 Digital Delay. Specially on Channel III.

Sorry, wish I'd seen this earlier. I asked Mike B. about the loop when I had a purple stripe in back about 10 or 12 years ago. I don't want to say this is word for word but he said the loop kind of is what it is, it was meant as a pro feature to work with the big stereo rack setups and fx units that were popular at the time where all the in and out level and mix stuff was in the fx unit. It basically just wasn't meant to work with pedals.

I asked a local-ish tech who's a very competent builder and modder to have a look and he said if I didn't mind losing the reverb he might be able to do something but it would be a huge hack and probably not work as well as using an external fx unit that allowed you to really tweak signal levels.

I just kinda gave up.