Hi I've recently noticed that the transformer gets quite hot to the touch. It's not burning hot however it does seem a bit hotter after the speedball upgrade. My question is how hot should I expect the transformer to get on the Crack? I am able to listen to the amp for several hours with no problems though; it just gets kind of hot after extended periods of time. I apologize if this is a silly question but I would just like to confirm whether or not I should be concerned with the heat.