Just got done installing a brand new reverse kit in my '97 Ski-Doo Formula Z 583. Forward works flawlessly, however when I put into reverse and give it throttle it starts to move very slowly and as the clutch engages, it makes a terrible high-pitched grinding sound! Metal flakes in bottom of chaincase too after. I tightened my chain as tight as I could by hand and it said to back off only as far as to get pin in, i was able to get pin in but I think it's too tight. Took pin out and backed it off a half turn, pin whet in much easier then without hitting the case bolt. I also read belt deflection being off could cause the same problem. Really bummed as I thought it would work great....what could be wrong??? I think its gotta be linkage adjustment, it was shortened to about only 2-3 threads showing between nut and end of threaded part on joint. Lengthened probably about 1/4 to 3/8ths from orig spot. New sprockets and chain too, please help thanks.