long time lurker, first time poster with a question. I have a 406 Chevy with external balance crank. Motor came with a PPI 80001 dampener, 6-3/4" with bolt on external weight. Motor did not come with flexplate so I bought an SFI B&M unit for external balance crank. This is my first foray into external balance world, I've Always had 350s before. For my own edification, I am noticing that the bolt on weight on the dampener is clocked at about 7:00 with the timing mark at 10 before TDC while the weight on the flexplate is clocked at about 2:00ish give or take a little based on the center of the weight, and installed using the index pin on the crank. By clocking I mean looking at both from the front of the engine. The weights are basically opposite each other on a clock dial. Is this about where they should be in relation to each other? It seems like they would sort of cancel each other out taken as static balance. I work in the tire industry and I understand that to dynamically balance a wheel/tire assembly there are usually weights on both the inside and outside of a wheel and rarely are they clocked the same or even the same amount. I just want to make sure before this engine goes in my truck that all is as it should be. Thanks in advance.