stuck front caliper

[william550]

I know this seems to be an on going forum issue.
My bike is a GS550E 1979
-completely rebuilt.
I have had the front caliper sticking on and off for 3 years (I don't ride too Often)
I have tried lots of things to fix it.(new master cylinder-new brake lines etc)
I find it difficult to purchase parts for the front caliper
compared to the rear.
-anyways, I'm rebuilding the caliper again.
I've enclosed a picture of the 2 slider bolts.
there are 2 o-rings on one bolt and no o-rings on the other.
Is that the way it should be?
thanks
[IMG]http://www.thegsresources.com/_forum/image/jpeg;base64,/9j/4Q/ IMG_0641.jpg

[JTGS850GL]

The schematics show only 2 of the O-rings used and only on the one rear pin.