I purchased a Mopar timing chain for my 4.0L and it did not come with any info. at all. There are three different ways to install the set. There is a set of circles, squares and triangles on the cam and crank sprocket. Does anyone know what the difference is between these three marks? Anyone buy one of these that came with info. or instructions? I know how to install the chain but I would like to know what the best setting is going to be. Any help is greatly appreciated. Thanks.