So I have a 263xhd that is leaking fluid out the weep on the output seal as well as from the rubber plug on top. I have replaced the rear output seal twice now with in 3 months. I have read a lot about the pump rub issue and have ordered the upgrade kit from MA. I am also getting a new tail section in the kit as well. My question is does anyone think these leaks are related to the pump rub at all or am I wasting money? no holes on rear case half as many tend to get. truck does vibrate slightly going down the road at 45mph. I also checked the vent tube and it is free and clear. Any help is appreciated.