Good afternoon. I have been working on my shop since March. Now I'm taking a break today. My truck is making a clunking noise when I start from a stand still. I inspected the drive shaft and the play is at the trans. tail shaft and a little in the rear gear. When I shift from reverse to drive I can hear it in my carport. The truck has 75,000 miles. This tail shaft play seems excessive to me. Any thoughts or others experience this too? I want to have my ducks in a row before I approach the dealership. Thanks I look forward to your response.