Need to Replace Pinion Seal Again

On the last seal I installed I put grease on the back of the seal to hold the spring, RTV around the outside of the seal case, and RTV on the splines....... that's why I need to check to see where its leaking.

Well, you might have a groove worn on the yoke. Is the rear vented?

It should have one of these where the brake block is bolted on.