Hi everyone I'm fixin to start a timing belt/water pump change on my 3.5L Montero LS after speaking with the parts guy at NAPA he stated that as soon as I releave tension on my timing belt my cams would snapp around and possible do some real damage and said I needed a tool to hold those cams in place. Is this true? if so could someone tell me where to get it, or is there another way? Any info would be greatly appreciated.