I have Chripa with no zeta but otherwise maxed out leadership ability. It should give '20% TM to ewok allies on a basic attack' ...the only one I have noticed TM increase on a basic is from ewok elder using his basic. Even still, it isn't every basic attack that he gives 20% TM to the rest of the team!
What gives... is it only like 50% of the time a basic will give any TM? (ergo not noticed on any ewoks other than elder)