So earlier tonight, i pulled my four 6l6's out of my 74 twin reverb, i then put in two yellow jackets in with el84's i believe.. but, i failed to notice that the plastic piece in the middle of all the "prongs" on the yellow jacket had been broken off. i then turned my amp on standby and noticed that only one of the tubes was powering on. Next i decided to do something very stupid and i turned the amp to full ON. The noise and the "small explosion" if you will, was not good, i then pulled the yellow jackets and put all 4 6l6 tubes back in. i powered the amp on, and i am getting a VERY LOUD buzz, the amp still works and i can play a guitar through it, but the buzz is unbearable. My knowledge is VERY limited with this amp, and any help would be much appreciated. Thanks!