I have a Line 6 Spider IV and I can't seem to get my delay to work the way I want it to. I have been thinking about getting a delay pedal because they seem to work better for delay specifically but I don't want to buy one out of sheer ignorance of not knowing how to use what I already have. So my questions are this: 1. How do i adjust the delay settings? (besides changing how much delay and the type of delay). 2. Is the amp's delay settings just as good as a Memory Man, DD-7, etc.????