Vince called me yesterday since it seemed the LHRS BPM had no signal. Back up plan is to usse spot_R to use the right arm. I checked the cabling in LHRS and indeed the ribbon cable was unplugged, I pushed a bit so it is more recessed and put some tape on it. Though please be careful to plug it back if it gets unplugged when working on the LHRS, it goes in the first 16 channels of slot 25 on ROC4