The ö symbol corresponds to the hex value F6, which I see in your data.000 file 4 rows above the 'a' in PartyV, as well as 15 rows below. Is this in the act 1 save you sent me the file from? Are you sure you have XVI32 set to display 16 columns?
In the example, as well as your own file, the hero has no spare stat points, so the hex side should be '00 00 00', while the ASCII side displays blanks. The 'FF FF FF' is what I changed the hero's stat points to (ie 16777215), which is the maximum possible value.
The stat points are found from the PartyV term, while skill points located elsewhere (the Deathknight and Base terms). I have not tried hex editing in the after game BF, but there are likely differences (especially for finding the unused skill points). Presumably most people have their hero strong enough by the end of the game they don't really need a boost for the after game BF. It wouldn't be too hard to check the after game BF if it was required. Are you there yet (ie from a previous game)?
The Windows Calculator in scientific mode can convert between normal decimal values and hex values. Typing in 50000 and switching to hex gives you C3 50, so for the hex edit procedure you would change the stat/skill points to 50 C3.
