Help with a Rogue

Hi, I just found this forum, and I figured this would be a great place to find out something I’ve been trying to figure out. I have a Rogue, which despite being a low end moog, is still amazing IMO. It’s my first monosynth, can you tell? Anyways, I’ve noticed that lately, when it is in countour mode, whenever I release a key, the note drifts down. Does anyone know why, and how I might solve this? Your help would be greatly appreciated.

Oh, and one more question while I’m at it…does anyone know if it’s compatible with an ARP Little Brother?