I have a 1991 vn750. The bike is up on the center stand and when I engage the clutch and put the bike in 1st the rear tire spins like the clutch is not engaging. Cable is fine. Checked to make sure the lever was connected and moving and it is. Does the clutch need replacing or adjusting? :BLAM: This is my first bike so learnning as I go. Next job is the splines.