got cracking noise from crank area!!so local bike shop changed my pedals and put new bottom bearing cups on the rod,,not changed rod tho..checked frame nuts bolts screws etcccc..but still makes a cracking noise every now and again..mostly after free wheeling or putting pressure on down stroke.(only about 20 times over 50 miles)my shop have no idea now!!!!so just hoping theres some advice out there about my problem thanks mark...trek 5.9 madone 2004 ultegra