Whenever I've had a leak after a fresh install / replacement it's usually because the silicone seal didn't seat properly. I don't think I've ever had the glove side leak. I put a very thin coat of silicone on the seal to make it slide in better.
After it works, I've yet to have to change seals in 3 years (I've had to change gloves ~ every 9 months or so).
I also have heard the Ansell gloves are pretty thin and tend to puncture easily. Do yourself a favor and join the Smurfs, try a cheap set (like $7 USD) pair of showa 720's.
Good luck