Thanks for responding. I didn't have a chance to get under the car tonight. But one thing comes to mind when you mention the reverse ball detent. I noticed there is no 'click' or positive position for the reverse arm. While I was adjusting the rods I just positioned the lever to the forward position as far as it would go.

Should there be a 'click' or detent when the lever is correctly in reverse? Without a 'click' would I assume the ball may be missing? There is RTV on the bolt at the detent area, so someone's been in there.