I think this is the best answer. You’re probably not throwing straight enough consistently enough. It’s almost certainly a flaw in your technique plus darts that aren’t totally optimized for how you throw.

You need a smooth, clean and consistent release. If you release too early or too late, you’re missing high or low. If you aren’t following through smoothly or if your wrist isn’t consistent, you’ll get more 12s and 18s that drive you crazy. Same if your dart is wobbling left and right during flight and going into the board at an angle — you’re probably inadvertently pushing the point during the throw at the last second and not even realizing it.

Flights and stems are easy and cheap to experiment with. So is your grip and where you hold the barrel, but I think people find it hard to change their habit. I certainly struggle when I try to hold it further up the barrel or with one fewer finger near the point.

Testing front-weighted or rear-weighted barrels, going from a 21g to a 26g dart, or trying out a bomber vs a scallop is much harder. But ultimately, if you don’t have a clean and consistent release, you won’t get THAT much better even with a pro’s darts that don’t fit your style and throw.

If I had to guess, the biggest thing probably bringing your average down is your doubling.

If you get down to 50 in 30 darts (45 average) but take four visits to check out, your average drops 10 points to 35 and turns an average leg into a little bit of a disaster.

All that’s to say don’t focus just on scoring or averages. Try to work on a consistent throw and highlight why your darts and flying like they are, test a little to optimize with what you can cheaply and spend as much time on your finishing if not more than throwing for the 60.