A few questions. Ive got my ampeg matched with a Kustom 3-15B cab and i dont know if thats a good match? I cant find any information on the kustom except for the notes off the old ads. Aside from that, my head has its on and off days. At times a horrible screech will pop up, so i end up wiggling the cord, to correct the problem, or shutting it off. The jack isnt loose either so im assuming its a connection problem? its not the cord because all the cords ive used never had problems. Also, when i hit a certain volume the sound drops down to hardly anything at all. But when that all isnt going wrong everything sounds great. any help would be greatly appreciated.