in future try to stick to one thread per subject! mods dont like it when you make several threads on one thing!
have you tried setting up your preset, then turning on the noisegate and saving the preset with the noisegate on? just go onto each of your presets, turn on the gate then save it. It should stay on any presets you saved it to. (this seems to be the case with most modellers)
IJ.
Guitars: Ibanez RG420EG, Harrier Mistral Ice White Tele
Amps: Hughes & Kettner Edition Blue 15R (w/ 8" Celestion), Marshall Valvestate Mk.I 8100 Head, Blackheart BH5H Head
Cabs: Marshall 4x12 (4 x Celestion Pro 12")
FX:Line 6 Floor POD, BOSS 7-band GE-7, BOSS Mega Distortion MD-2, Vox V847a Reissue Wah, Danelectro Cool Cat Drive
Just another Rig Sig Jig, Dig?