My bike has been sitting in my car port for about 2 months. I went for a ride the other day and I noticed my front brake was really touchy as I pulled out of the driveway. So I am cruising down the road about a block from my house and the front end started bobbing down when I was shifting gears. Then my bike started bogging down and it just stopped in the middle of the road. I had to almost floor it to get pulled off the side of the road I noticed the front brakes were smoking. I pumped the front break lever and it was hard as a rock. I really squeezed it hard and it made a kind Of popping noise and it released the caliper, then it was fine after that. I was kind of leery of riding it after that, but it hasn't happened again. Any ideas what happened?