I purchased my very first Bryston gear (BP-17³, 4B³ and BCD-3) in october 2021, brought it home, unpacked it, hooked it up and found out the volume control on my BP-17³ was not working (brand new out of the box).Called the dealer, he came thinking, that I hooked it up wrong way.He brought store demo, so for 3 weeks I had to use theirs.Lately, the volume control on my new preamp is kind of loose too, but I usually use remote control.The other thing, that worries me more lately, the top of the preamp gets hot after 3-4 hours of playing.I don't play loud and my stand has a really good air flow.My 4B³ gets hardly warm.I'm thinking, something not right...