Everything was ok on the track. On the final run I couldn't get it into 4th gear. My clutch is now lighty softer and lower, so I know my stock clutch is almost gone. Also the shifter feels kind of loose. Now, my question is: can a worn out clutch cause 4th gear not to go in somtimes, whine and pop out under load? The tranny don't grind in any gear and only goes into 4th if I play with the shifter and press the clutch several times. I can downshift from 5th to 4th with no problems. The whining is only in acceleration and not deceleration. Any ideas?