Ok got my zoom g3 and i hooked it up to my amp and lot of the effects are causing major unwanted feedback, the delays are way too over the top and lowering the settings, i dont have fx loop either, any ideas?
Go into "global" and adjust the "master" volume there. Also, make sure its set to "combo front". The preset volumes for all the fx vary quite a bit. Between the fx volume, the g3 master volume and your amp volume you should be able to tame most of the craziness.