First, I only wish I could have played as well as you at your age. You play very well and you have a pretty solid stroke.
Three suggestions I have are:
1) I noticed on some of your shots that you would step into the shot quickly, address the CB low, and then slowly raise the tip as you practice stroked. This could throw your alignment off as your back hand and bridge are moving...even slightly.
2) You play way out on the CB and you're not scared of inside english. As noted above, some of your shots could have been played with a more natural position with minimal (1/2 tip or less) of english...I fall victim to this as well...natural position is boring, right?
3) The extra spin you were using causes erratic position. Many times your CB ended up on the rail or near by...just like me. Buddy Hall professes to stay one diamond off the rail unless absolutely necessary.
Not knocking your game (you play well), but I know a little hint here and there can really help out.