Conversion result from ePub to KF8 different than MOBI

Hello!

I'm having trouble achieving the same result with exporting ePub to Amazon (Kindle Touch) formats (MOBI and KF8) using Calibre. If I export to MOBI, the result is something very similar to Amazon's own style for eBook, but if I use KF8 at least line height is not the same as with MOBI.

MOBI version (good):


KF8 version (bad):
(Screenshots from Kindle Previewer in Kindle Touch Mode)

I tried with line height settings with no luck.

Any suggestion will be appreciated!