After bleeding the breaks from the bottom, I cap off the cylinder, spin the wheel while continuing filling with 5606 until The wheel stops then close the fill port. The wheel is a little hard to spin so I know pucks are being pushed up by the bladder. Both breaks stay hard but then After a few flights the right break starts to go soft. There are no leaks and the cylinder is full To the top. I do the process over again and get the same result. Any ideas?