Hi People, I have been reading the very informative articles regarding the F75, by T Dankowski...and as you know if you have read it,..? then it is well put, and fairly straightforward to under stand,, but the part I dont under stand is.?.....where he advises you to use >>(DISC 0)........../.Sens 99./. (TONE 1).. Pro.. (PF)... ..( TONE 1....and DISC 0) being the optimum preference for these settings to work.}...Then further down the page says that if you run the Disc lower than 4,........ then multi tones is the only option to use....Whaaaat???...scuse me..????didnt you just say...Tone 1 ..when using Disc 0... to pick up all those deepies,, with as much Sens as you can handle,,???Hmmmmmmm...??? any explanations please Peeps.....thank you.. regards....Kuffy.....