This should make soldering SMT 'interesting'. Hopefully that clears up & th= at your recovery progresses favourably. Good luck with it, Joe Interestingly, may have mild occasional upper-left end-effector tremor, onl= y when gripping objects and only when in light side-to-side contact with ri= ght upper end effector. I postulate that controller may be sensing much imp= roved general state of left side feedback and deriving differing positional= results for left and right sides but having problem with how to deal with = perceived positional differences when then two effectors are in actual cont= act so they appear to over or underlap, --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .