My coworker just got his gen 6 back from repair and got a new motor, he kept saying it was getting hot that's why he sent it back, yesterday gets it back and after 10 min says it's too hot to work with hands the machine to me after it's cooled down a bit, thing was hot enough for me to drop it like 300 degrees hot I'm surprised the frme didn't melt. It is a beloved gen 6! With a couple years on it, any ideas as to what's wrong? Wiring maybe? I wonder if the guys didn't run it long enough to notice the heat issue but it gets seriously hot in like 2 minuets and they are far away...