My Polaris Indy 1995 Classic (500 liquid cooled) has a mechanical reverse lever on the handle bars. It has quite a bit of slop in it when engaging it in reverse by flipping the lever up. About 30% of the time, it does not engage in reverse, but rather makes a horrible grinding noise that makes the hair on the back of my head stand up and my wallet pulsate. Do you think it is not engaging because the cable needs to be tightened to lessen the play in the reverse lever? I changed the gear oil 2 weeks ago as part of my yearly service, added Amsoil....just checked the gear oil today, there is a bunch of metal filings stuck to the magnetic dip stick, otherwise the fluid is clean and full. Amsoil stinks too. Thoughts?