Replaced my broke accutronics Reverb tank that came stock on my DRRi. Choose the MOD cause it got nice reviews and it was cheaper! Well, now my Reverb knob acts like a mix knob for the dry sound! The Reverb sound is basically the same on 2 or 10! It just adds more dry sound as I increase the Reverb knob! I've flipped the cables (no Reverb) and checked the tubes. No difference. It adds a good amount of hiss too! Did I got a bad Reverb tank or should I get another accutronics instead of the MOD? Thanks.