It's hard to get at the grease zerk fitting thats in the center at the cross section of my ujt. I do alot of mudding and like to lube after each outing. I'm thinking of drilling all four ujt end cups and installing a zerk so I can lube each cup individually. I'm also thinking I'll put a brass plug in the center of the ujt channel (the channel that is cross drilled through the ujt body for grease to flow through). With a zerk on each cup, the brass plug will force the grease to escape from the cup being lubed, and not allow the new grease to flow to the other cups. This should insure thorough cup lubrication and easy access to all four zerks. Any reasons I shouldn't do this?