My frist question is how to take the calipers apart? Next… on this go kart there are two disc on the front and one on the back. So there are 3 lines. I have tried bleeding all lines and no luck. I have look for any leaks and none. I did notice the washers on this go kart where a little different. These have a rubber ring on the inside of the washer and all my other honda atv's have brass/copper looking washers. Should i replace them with the brass/coppper ones?