I actually started thinking that the better I got, the worse I did. If that makes any sense. That 270k barrier was absolutely killing me! I once got exactly 1,000 less than my 270k high score, try sleeping knowing that you were 1,000 points away and couldn't seal the deal! I'm really hoping my scores start to jump up a little now that I got past that mental/psychological/bad luck block.
I think I understand what you mean by having your skills increase, but not your score. I'm playing with more confidence as moves are coming naturally. But the confidence I'm gaining has a downside; I'm being a bit too careless and losing lives unnecessairly through dumb mistakes and needless point pressing.
The elevators now have pretty much ceased to be an issue. Funny how the 3rd and beyond elevators start out being the most feared, then later turn into a welcome sight; they're the only levels on which you have total control--nothing can get you but you yourself.
Things I recently figured out:
1. The "jumping on Kong's foot" point pressing technique works on both sides of Kong's cage--you just reverse the joystick motion. I've found that on the early rivet levels, you can safely gain points there as you wait for the fireballs to get their act together for pounding with the lower hammer. I also figured out (with a little help from watching Hank Chien's vids) that you can clear out the upper right rivet and jump on Kong's foot in the right side of the cage with safety... if any fireballs start coming to the middle, you just go down the ladder and get the upper hammer. You can also run left with that hammer and take out some of the trapped fireballs on the left side. Just so long as you leave enough hammer time to nail the ones that appear on the right side. This has me consistently getting over 16K on the first level (first two screens) without the need for point pressing on the barrels.
2. On the conveyors, if there's a momentary hesitation before the first fireball pops out, you can head right up the left ladders to the 3rd level (above the hammer), grab the vacuum cleaner (or whatever that thing is), and head right with clear sailing. You cannot have the slightest hesitation however or a fireball can catch you coming down the ladder. You also have to run left on the conveyor belt even though it's moving that way for the left ladder. You basically need to haul ass. If the fireballs pop out quickly, then I play it "straight", moving to the left, then often using the hammer for pies and fireballs.
I can see now how some of these guys get scores of 1M... although the game appears to have random factors, there are actually a limited number of scenarios. Once I learn more of those, I expect to die less and rack up more points.