On the Motorcraft INNER CV boot kit, they supply 3 tripod rollers. WHY? These don't fit my original tripod. I hate to pay 2.5 times the price of the outer boot kit if you can't use the parts. Also supplied in the kit are two "Driveshaft Bearing Retainer Circlips". What is the significance of the GREEN colored one? Where is this one supposed to be used? I used the the other clip to retain the joint in the trans. There is no mention of this in my factory service manual and no instructions are supplied in the kit. Does the CD rom have better info?