ive got a silver eagel lt2300..i replaced the belt on the bottom of the clutch ..it feels tight but is slipping..there is a spring with an adjustable plate that moves left to right and the spring has an adjustable bolt..this is on the rear of mower..was told to tighten spring and did so and moved bracket to the left and to the right..still slips..have no manual..1st time working on this..need help!