Have a 1999 3320 Special Edition that continues to require the slave cylinder to be bled off to operate. Is there a rebuid kit or is the answer total replacement ?? I am not getting any air when bleeding and it will operate for awhile but the more shifts the sooner it requires to be bled off. Could there be another problem in the system that I am missing ? All the other hydraulics seem to be working fine so I have not checked the fulid level.