That's what I'm trying to make this year as well, but my het male is far from a stud unfortunatly. Mine has always been a poor feeder and just does not seem too interested in breeding. I have seen him lock a few times with my normal females but only 2 short locks with my het female. How large is your het female? Which line did your hets come from? How many normals is he breeding for you? Good luck, I hope you get all females.