Worked my Eden WT800 pretty hard today in a warm ballroom on stage. The fans comes on pretty quick. The rig started fating out(lack of a better term)..Like the sound you get with a bad battery in an active bass. Into a 4hr show rehearsal. The amp cooled down and worked OK again. I have a new tube coming in. The amp is in a pretty tight Gator road case. I havent reversed the fan. I am going to put the new tube in, reverse the fan a drill a few air holes(smallish) in the top of my Gator case to enhance airflow. Am I on the right track? I dont have the 2 to 3 week turn around to have my shop look at it as our show is the 12th and we have 4 rehearsals before then. If ir craps out completely I can rent a sub. Anybody else have their WT800 exhibit the same problem? What was the cause/causes? The solutions? Thanks...in a bit of pinch right now...been a long day. Peace!