I'm right there with you. I have been dry since September, but lately I too have found that I have to push, shake, rattle and pull to get that last drop out. A couple of times I wasn't very concientious, and looked down to see that I had wet myself pretty good. I was getting worried that maybe I was regressing or that there might be something else going on. Saw my uroligist this week and talked to him about it. He did an ultrasound after I had gone and it showed an empty bladder. His opinion is that I just have to be more diligent about getting that last drop. Like you i find sitting down to be the best way to go.
Hope this give you some comfort.
Craig