Hello, This is my first time posting so pls bear with me, I just bought a used Mack R model that had been parked for a long time. at first the gear lever had to forced to engage or to be pulled out of gear ,so we adjusted the clutch cable but the problem persisted: though once in gear it rode ok. we have also adjusted the disk from outside but to no avail, my friend suggested it might be the clutch plate what do you think?