Are there any lubrication points (grease zirks) on the WK? The wkjeeps.com site claims there are no grease fittings on the 2005+ WK, but the maintenance schedule in my owner's manual shows an entry for lubricating the 'upper ball knuckle joint' every 6000 miles. I've been having some strange suspension clunks while driving over small, sharp bumps (like a depressed manhole cover) and they are reminiscent of ball joint issues I've seen on other vehicles. I thought it would be prudent to lube them, but I can't find a grease zirk anywhere under there. Is there some other way to lube these suspension components?