don't run a compressor before it, it should be before everything anyway. That may be one of your issues if you have other pedals running into it, try it first in the chain... It is the kind of pedal you have to learn how to use I think. After a few hours with it you'll get it.
As for the compressor or Eq that would not be for Jerry tones specifically. A compressor after the pedal will tame the horrible highs and lows that seem to want to bust your speaker and ears especially with an octave pedal, but still you have to have the pedal operating properly first and add that to taste. Adding more pedals to it will not make it easier to use if that is your question, it may help tame some of the extremes is all.