Solved.
Settings are goes after second identical four-letter sequence (OZLS for my "experimental mode", but it's different for other saves). I think, first sequence limit variables for "default" settings, while second is for the "current" ones.
But it's everything but slider.
Slider and some other mysterious settings goes after H0150 up to FF FF sequence at H019B. I have no idea what all of them does, but byte H0154 _is_ slider position, measured from 00 (zero) to FF (max). Default is 7F, obviously.
I hope, it's not only visual difference, while other bytes regulate actual behavior.
Anyway - now you know where to search.
BTW, in manual I seen words like "you are free to exchange your worlds between platforms" - try Amiga/Mac versions for this settings? I can be wrong though.