Hi guys, I'm having a problem with the front brake on my 1982 CB250RS. Here's what happened. I had the caliper off the disk and, being a mechanical nooblet, accidently squeezed the lever, causing the brake pads to permanently press together. No problem, I thought. I opened up the brake fluid reservoir cap (thinking it might somehow help relieve pressure?) and prized the pads apart with a screwdriver just far enough to get the caliper over the brake disk and back on the base. I then replaced the cap and tried the lever, only to find that it was now very high pressure. That is, the slightest touch will activate the brakes, and a slight pull will give me heaps of braking force. The facts: The rubber seal that sits under the fluid reservoir cap has deformed and doesn't sit properly around the edges of the reservoir. I tried bleeding some fluid out of the brake caliper, thinking it would relieve the pressure. I first tried with the reservoir cap off, then on. In both instances, the lever would loose all pressure when the fluid was draining out with the drain hole open, but as soon as you closed the hole and released the lever, it would return to the same high-pressure state as before. My questions: 1. What exactly has happened here? Why did pressing the pads further together than they normally go when there's a disk between them cause this problem? Am I right in thinking that this happened because I removed the cap and thus broke any suction caused by the air-lock? 2. Am I right in thinking that the deformed seal is failing to prevent air from getting sucked into the reservoir, and that bleeding a small amount of fluid from the caliper with the reservoir cap would otherwise have fixed the problem? 3. If not, how do I fix it? As you can tell, I don't really have a good understanding of how the system works, so you'll have to forgive me if my ideas are way-off. Thanks for any help you can offer!