I have a Momitsu (not the Deluxe version, nor the network one) and I hate the remote. Is there an aftermarket replacement version that will work with the 880? I've tried searching the Web but have come up empty handed.

First, see if any of your other remotes have "learning" capability. My Yamaha remotes works fine for the most common functions.

what mammal said.... a learning remote will fix you right up and it should also increase the distance of the signal compared to the momitsu remote which truly stinks in every possible way.