I have a problem with the recoil assembly on my mighty mite chainsaw.I went to pull start it and nothing grabbed. I took off the recoil case and found that the rewind assembly was off and laying on the flywheel.I put it back together ,,as i thought it would go,but now it dosnt catch/grab,,and sometimes wont recoil.There were only two washers a spring and a screw that i could see.Am i missing something? Thanks