Hi pfsmith0,
I've tried your parameters for the comb filter and I've descovered that the right for a huge comb filter with '80 flanger are:
Range = 0% (removes sweep)
Enhance = 50%
Manual = 70-71%, not lesser nor greater
Odd/Even = Odd.
These are useful for Malmsteen who makes a great use of it and also for some old school death metal or funeral doom.