I do know that with the newer cars, most automotive shops will scan the computer and save the settings when replacing batteries because there is a chance that the computer can take a hit and your electronically controlled engine components can suffer. I have heard of trucks replacing the batteries and their throttle body sensors going haywire, abs going haywire, etc... Not sure on the costs though
Thanks guys, I'll go back to basics and work at it slowly. Iacas, I'll work through them. Usually I hit the ball well, my higher index is caused mostly by my work around the greens including putting. Never thought I would forget how to hit a ball.