Statistics - Now I think I know what I need to work on

Even without collecting any stats, I KNOW that this is my weak area (of course, there is always room for improvement on stroke, rhythm, bridging, etc.). But properly playing the last 5 or 6 balls - especially when there is a perfectly good spread - is a relatively weak area for me. I think that the fix lies in having the discipline to map it out when that number of balls remains on the table, and to not let myself get lazy and delay or skip the mapping. Maybe after putting in enough of this work - the way I’ve put in work on other parts of my game - the 5-6 ball end patterns will start to present themselves to my mind more rapidly and naturally than they do now.

Join the club! It was said that Mosconi was a "middling" player until he learned to play the last five balls. Of course most of us would kill to be so "middling."

I think if you can run into the 30's here and there then your skill at planning out the last five is probably not your weak point. It's probably just your cue ball control. You get through the rack because there are lots of options, but when you get down to the last few balls your cue ball control has to be spot on. Your deficiency in this area is there throughout the whole rack and is only apparent to you near the end. Like me, you probably don't want to hear this because it points at a more difficult "problem" to overcome than simply learning better shot sequences, which is far easier to do.

Put a break ball out there and throw three more balls out there randomly (mostly on the lower half of the table) and practice getting on the break ball.

If you didn't have this problem you'd be running 100's all the time so don't be too hard on yourself. Work on cue ball control, IMO. The better your control the better last five you will have because you will be better able to choose with last balls to leave yourself. It's like a vicious circle... better cb control means better final balls which means easier strategy and better execution.