OK so i recently had my V2 serviced and changed to run with KT88s. The amp itself sounds great but it gets extremely hot! The tubes arent red plating and the bias is pretty conservative. Im just wondering what is normal amount of heat for this head running these tubes. Its hot enough that i can place the back of my hand on the face plate and it stings, and the back of the amp gives off quite a bit of heat. I think my tech measured the tubes at about 430F using a heat gun. He documented the amp on YouTube but im at work at the moment so i have no access to it. I know i have the option of installing a fan, im just wondering if the heat is something worth doing so. I dont want to melt the board or cause any sort of failure due to heat, or should i not be concerned. Im not looking to start up a huge debate about installing a fan, ive read a few of the threads some get ugly haha. So for those who have Kt88s or even 6550s in their V2/V4/Vt22/Vt44 amps is this normal. Thanks!