HMS1

Ok guys I am having a few issues here with a clutch. I just put in a McLeod street twin, with flywheel and new GM Performance slave/tob. Now the clutch pedal is very high and is slipping. Now the clutch is not all the way broken in maybe 20 miles on it. I have read to use the tick master cylinder but I should be able to use my stock tob via McLeod and other local performance shops. If I shim the tob then it will not disengage the clutch at all so that's out the window. Any advice will be helpful