I don't knOw if this makes any sense, but it sounds a bit "loose" for a muff. What kind of muff sound are you going for? Also would help to know what volume the amp,guitar and pedal were set to? What was the gain/distortion on the pedal was set to.
Guitars: Fender CS Strat, MIM Telecaster Deluxe, Epi Hummingbird
Pedals:EHX-killswitch, BMP w/wicker,small stone,cathedral,nano q; Earthquaker- hoof,tone reaper,bit commander,organizer;Wrenn and Cuff BOW;Sunface; Musket; FuzzFactory;Boss SD1 (original,analogman,keeley),RV3,TR2,CS3, RC2, space station; EB VP jr;Behringer multifx,digitaldelay,gcb 95 wah