I bough a party pack from circuit city a few months ago..the amp ended up giving me trouble, making wierd noises through the subs,so i sent it in for a warrenty replacement. I received the amp back about two weeks ago. It worked fine for a day and then there was no sound going to the subs. I double checked all wiring and even hooked subs up to diff amp and everything was good. Then I find out if I give amp a little flick of my finger near speaker terminals amp will push a little sound out implicating that there is something loose in the amp. Will bazooka charge me shipping again being I just got this amp back? Also is there something wrong wit the preticular amp I purchased.