i have the motor secured to a 55 gal drum with water in it
have good pee out of hole
but the aft lower cover is warm to touch
its not so hot that i cant hold hand on it though
is this nornal
QD-13 has lower covers? I didn't think it did, but I could be wrong. But if it does, the aft one is bolted to the exhaust housing. There is fire inside that housing, so yes it gets warm.