I noticed one of my new ball joint boots is cracked again when I crawled underneath for a lube job tonight. Also noticed 3 of 4 ball joint boots are cracked and oozing grease. Is this pretty common? One of the ball joints is 6 months old replaced under warranty. Anyone know if I can buy the boot only, hoping I don't have alot of wear in the joints already. 64000km only btw.