OK – I'm feeling sort of stupid……..I believe my problem was related to how much signal I was hitting the undulating effects with. I think I'm all set and have figured it out.
One other point somewhat unrelated….I wish there was a slower fade in for this effect, so that I could simulate the slow travel and fade in of a volume pedal into the effect ( sort of like an old digitech space station or volume swell on a line 6 DL4 ).
When a thread is started for ideas related to eventual software upgrades I'll be sure to mention this again.
Thanks again for your help.