Rocktron Intellifex

I am trying to use it with a Marshall JMP-1 preamp, Marshall 20/20 power amp and Marshall 1922 or 1960 cab. I play a Les Paul, and an Ibanez RG 570 with EMGs. The Intellifex replaced a Digitech GSP 21-Pro. I picked up this unit because I always liked the chorus sound and I was never satisfied with the chorus in the GSP. Each individual effect in the Intellifex is superb but it's the configurations that drive me crazy. I hate that I loose parameters on delay and/or chorus in most configurations.

So far, ok.