I agree, evan, that you should not get b-stock - and I'm 99.99% sure you didn't (can't rule it out but very much doubt that you'd get one by accident).

I take it my previous post (about some front panel buttons only working in conjunction with other buttons) was not the issue. My front panel buttons click audibly when pushed enough to engage, and it's not all that much pressure. The haywire behavior does sound suspiciously like an odd IR system issue (like maybe the repeater and the original signal from the remote are both being received and the unit is getting confused). Can you cover the IR sensor so only the repeater's flasher has a shot at the front panel sensor?