I'm in the process of changing my pitman arm seals in my gearbox on my 68.When I pulled the pitman shaft out(had to,to get seals out)I noticed some groves wore around it where the seals ride.My question is can I buy this piece or will I have to change the whole gearbox.I hate to have to do that because that is the problem.I know if I put it back together that way it will leak.Any suggestions?

Anybody?