I have a Precision Industries Vigalante 5 clutch and I am currently trying to solve a problem. It is believed the pump tube is sucking air and/or causing a leak(pressure problems). The restrictor that is supplied to be installed in the fluid out line to cooler is currently not being used(as I and others think it is probably not good to restrict cooler flow) . I am wondering if this needs to be in place in order to stop the tube from leaking/sucking air. I know the obvious next step should be to install restrictor and see, but trans is at a reputable builder and one is not readily available. I would like to poll everyone that has a vigilante (multi disk only) and see who has installed the restrictor and who hasn't. If someone has not installed it and had problems let me know. Or if anyone has input please post. I have been without trans for 2 yrs(long story) and I am finding out that my problems all along have been due to the pump tube. Bruce, I already know what you are going to say, but please post anyway. Thanks in advance to all that answer and vote.