i recently bought an excellent ibanex sz550qm,(i think thats right) and upon plugging it into my amp,at a respectable band practice level, it fed back with a vengeance. i am a competent player and have never had such a problem.i already own an old s series, and have had no problem, only tasteful, controlable feedback, and with exactly the same amp settings etc, this new guitar feedsback between every note. is this liable to be because of poor pick ups? they are the standard ibanez humbuckers, and as the rest of the guitar seems of such a high standard, i am surprised at the problem. any advice would be greately appreciated.