You pose some interesting issues regarding lead placement. Did your dosage increase over time suggesting a possibility that the lead had migrated? Did you go back to the same surgeon/facility that did the placement? I can't imaging w/o some follow up studies that suggest some movement of the leads that the surgeon would be very agreeable to fine tuning their work- they couldn't have it in the wrong place, how dare you suggest! So how do I approach my surgeon with this subject? In my case since I do not have a tremor there was no "noise" in the nerve pathways to guide them to placement. They had to find it by my resulting motor response. They likened it to not having to find the right "house" but the right "neighborhood". Are you kidding me, I want the right room of the right house! Sounds like they may be a block over!