I have my whole axle apart right now (b/c I broke a Ball joint) even took the diff out to clean and degrease the axle tubes, everything. Do you guys think I should replace my inner axle seals in the diff at this time? They're Napa seals, about 1.5-2yrs old. After degreasing the housing I looked at them.... they have no physical damage, the spring looks good and they weren't leaking before I blew a ball joint. That's $10 I could save. Or should I just thorw a new set in?