sealion

I have a happening sammichSID running with presets downloaded and all buttons running, but it does not seem to be stereo. the rca headphones have sound only on one channel. I have swaped the chips with just one chip, the sound does show up in either channel depending on socket. I'm thinking this means a dead chip? Bought from a reliable supplier. Or is there anything eelse to check? Second question I assume the three lower buttons are assignable, how do i do that? Third question what combos does shift work with? The lack of a sammichSID user manual (or even a two pager cheat sheet/pdf has me a bit baffled as much of what i read seems to be for Midibox but not sammichSID.