parking brake wire clip

[alves at email.unc.edu (Carlos Alves)]

I swapped out the rear brakes and rotors on my 16v last weekend, I have 
two or three questions as a result of that.

1: I lost one of the wire clips that secures the parking brake cable to 
the brake caliper. Now my parking brake is defunct. Where can I get a 
wire clip?

2: I noticed that while doing the job, both of the seals around the 
calipers had holes and tears in them. I am hoping that this does not 
indicate it could leak brake fluid all over my rotors. DO I need to 
replace the pistons now?

3: I did the whole wheel bearing bit, but I noticed that if in reverse 
and turning left, I get a wheel bearing sound out of my left wheel.. 
should I remove that wheel and make sure everything is OK in there? I 
noticed this sound before I did my rear brakes as well.