We have 7 order pickers. We have one particular order picker that in the last 18 months has had 13 incidents where the operator says it comes off wirwe and nearly hits the racking. We had one antenna card that was not up to snuff so it was replaced. Anyone with any thoughts with what else we might try. Raymond was here and gave it a clean bill of health but operators are afraid of the truck. They use it but are very leary. Any help would be appreciated.