Epub Navigation

[prudentintelligence]

I'm new to pandoc. I'm my question is likey not a bug. My issue involves being able to navigate properly to the correct landing based on the internal navigation, or the toc built into my docx file. i have attempted both ways to navigate subsections in the ereader and some subsections work fine, yet the furthe down i test, then the landing gets out of sync. I am using a .bat fule to create the .epub, and its otherwise fine - all H1 headers navigate properly, its just the subs. i assume I'm not referencering the properly in theb using the right filter or switch, My toc from ny manuscriot displays fine, but when i start navigating oast the front matter, things can get out of whack the further i get into chapters. again some land properly and some subections dont. please help.

if i have the nav enabled in the bat file, here are the 2 key lines i have set:
--split-level=1 ^
--toc --metadata toc-title="Navigation" --epub-chapter-level=1 --toc-depth=2

if i only use my toc from thedocx file, and the internal nav disabled, here are the key lines:
--epub-title-page=false ^
--split-level=1 ^

so the question is how do i ensure proper nav to subsections of chapters as laid out in the toc. whether i turn on the nav or use the toc, i get the same results... I'm sure this has been answered many times before, here in the discussion area?