I have a 135i and is having a clutch problem when I let off the clutch and start to accelerate it seems as if the clutch is slipping at low RPMs but when I get to mid to high RPMs the clutch grabs just fine originally thought it might be that clutch lock valve but then after taking it for another drive and RPM shift it it does the same thing it only seems to slip at low RPM not higher RPMs or midrange it's weird I've never ran across this I've had many manual transmissions and when clutch starts to go out the clutch slips the higher the RPMs and the more load you put on it the it slips this is exact opposite I'm at a loss don't want to put a clutch in it and have the same problem