I just switched over from an ampeg tube rig to orange. (2 of the OBC115 cabs.. super nice). Got the amp from across the nation today. Power tube 2 had come loose and was rattling in the chassis when I unpacked it. I checked the tube and it actually looked good. placed it back in the socket and powered it on.. played well and sounded awesome. But then I took a look in the back and noticed that the #2 power tube was not warming up nor glowing like the rest. Stupidly.. very stupidly, I went to push it down to see if I could get it to work. BAM! I felt like there was an explosion in my head. I let out a slow and loud F bomb like I never have before. Honestly.. I'm just happy I didn't drop dead right there. And I'm not entirely sure why I didn't. Anyway.. I need some new tubes. I'm assuming its best to get a whole new power set and match them. Should I just go ahead and do the preamp tubes, too? Any recommendations on tube replacement?