Don, the identical seal on my 3038e allowed about 4 tablespoons of fluid to leak out recently. I used it in early March to scrape snow from the driveway and put it up. Two and a half weeks later, I noticed a puddle under the right hub. JD in Asheboro ordered parts for it and was going to charge $400+ to fix it. I picked it up before they fixed it after I read on this forum about the numerous front end leaks. Most folks agreed that the front axle needed a vent to help relieve pressure from heat build up et al inside the axle.
There is a gentleman in GBO who made a vent for my tractor that uses the same hole that the dipstick uses. I haven't used the tractor enough to see if it will work, but he advised we try this first before tearing the front end apart. We both agreed that if it didn't work then he would replace the seal. He is a heavy equipment mechanic with a machine shop in his back yard. Let me know here if you would be interested and I will put you in touch with him.