I've been reloading WAAHS hulls with great success. Which wad are you using? What weight of shot are you using? What problems are you having? What press are you using? I'm using a MEC Sizemaster and it does a great job.
I'll bet your crimps are bulging out, a common problem if the correct hull isn't used.
Let me know what's up, I'll see if I can help.