I don't know if this issue has been addressed lately. I attempted a search and I found a 13 page thread from a few years ago
https://www.cvoharley.com/smf/index.php?topic=102435.0 and in that thread the only solution at the time was an adjustable lever, because as we have been told over and over, the hydraulic clutch is non adjustable. I have learned about and experienced a cure for my 2011 SESG hydraulic clutch that was not engaging until 95% of the lever release travel. One issue though, is that I am using a Barnett Scorpion clutch. The principles of how the OEM vs. Barnett hydraulic systems work are the same but the hub on the Barnett is smaller in diameter about 4.25 inches, versus the OEM, about 5 inches. As a result, the parts I am using will not, unfortunately, work with the OEM hub.
It started with a call to Barnett. I wanted to inquire about exchanging or buying a new pressure plate for my Scorpion clutch to convert it from a hydraulic to a cable style pressure plate. The reason being, Baker makes a hydraulic side cover for hydraulic clutches that, beginning at the inside of the side cover, it converts it to a cable style clutch where you can adjust the pushrod/nut at the pressure plate in order to change the friction engagement point on the clutch lever. There are only a few minor parts needed such as a cable style pushrod and pressure plate. Barnett told me that wasn't necessary because they had a fix. He explained that the fix is to put in a thicker seat damper, which is the flat ring, not the concave one, that is furthest inboard in the hub (where all the alternating steel plates and friction plates go). He (Chance) suspected mine was .063 inches thick but wanted me to verify before sending parts. So I pulled the primary cover off and pulled off the pressure plate, friction and steel plates to get to the seat damper. I measured it and it was exactly .063 inches thick. Barnett makes two different size replacements, one is about .078 and one is .089 inches thick. I told Barnett to send me the thick one first. I received it and measured it. It was .090. I installed it, replacing the .063 seat damper and put everything back together.
I started the engine in my shop and and let the motorcycle run a little while to warm up, then engaged the clutch and put it in 1st gear. I slowly released the lever and it started to engage about 1/3 of the way and not at 95% of the travel like before. I am very pleased. I did not enjoy riding this motorcycle because of the clutch. We just got 7 inches of snow yesterday so I couldn't do an extended road test but I did several tests in the shop to confirm it was real.
Unfortunately the Barnett part will not fit the Harley OEM hub because of hub size differences. I don't know if the MOCO or any aftermarket companies make thicker seat dampers for OEM clutches. But there are two solutions I am aware of if you want to keep your OEM lever: (1) get a Barnett Scorpion hydraulic clutch or (2) get a Baker hydraulic side cover and convert your hydraulic to a cable style clutch to adjust the lever friction engagement point. Other than the side cover, you just need a few parts from Harley to finish the job, including a cable style pressure plate and pushrod, which are not that expensive. The exact parts needed are described in the Baker install instructions for the hydraulic side cover that can be found on their web site.