If you set your character to Lvl50 and exp to 3008316 (max) distribute your points into the skills you want. Exit and edit the save.~ with a hex- editor (you seem to know how to get to this step) set the XP hex from (00000032) to (00000001) in all appearances
The second part is changing the L50 hex (00000032) to L01(00000001) for 3 Instances. Note: if there are five instances of 00000032 then edit the one after your name at the beginning of file and there will be two sandwiching the Xp hex. If your still unsure change one value and test. I've done it on multiple profiles so it can be done.