Too much lifters preload

OK, but what should i do then? I cant adjust the seat height and the total lenght of the lifter and the pushrod (seated) is less than 0.020 shorter than the old lifter and pushrod, that's the only thing I measured that should increase preload compared to the old setup.
I've read on serval places that factory length of 383 pushrod is 8.575 but on Lunatis page they have 8.555 as factory replacement, that would explain the 0.020, but then I would stil get 0.090 preload, at least 0.030 too much.