'02 600 edge=here's my Q=I'm putting new track in,and its been a bit since I've had a c.c. apart. I noticed that the lower c.c. bearing has seal in it on the c.c. side! I'm almost certain that its factory. just curious,why wouldnt it be left off bearing so it can get lube? I would think some lube would get past it,maybe poo leaves it installed so that shavings or debris cant get to rollers?thanks in advance