Joe, Don't worry what/where the valves are-just bring #1 piston up flush to block deck, to TDC. Cam gear only will bolt on cam in one position out of three possibilities- 3 threaded holes on the cam. Put the cam gear/with bolts on cam loosely and rotate cam to get the cam and crank dots in perfect alinement before even trying to get the chain on. Set the dots exactly across from each other-imagine a straight line through the center line of crank and cam ,this will set the crank @ TDC and the valves as I recall are completely closed on #6 cylinder
(actually firing #6)- you don't even need to be concerned what position the valves/ or the distruibutor rotor are at this early stage of the re-assembly. Just get the gears and chain on- in proper alinement. Then rotate engine to #1 cylinder TDC with #1 cylinder cam lobes positioned away from -opposite of lifters. Now you can check/install oil pump position and distributor rotor position for 7 O'clock---- # 1 firing position.
I kinda still think the chain is correct as long as it fits the gears 100% correctly. I just did a Chrysler 6 with the same tight chain issue-bought the 3 piece set from VPW. You will get'r figured out Joe!
Bob