Well its time for a new chain and sprockets on the 426. What is the deal with sooo many different chains? Anyone have a recommendation on which one and why? Steel or Aluminum sprockets? O ring or non O ring? Ive been trying to find a thread on this but I haven't came up with anything.. Are the Rockymountain Primary drive kits good? Go with the RDO or spend the extra and get the ORH? Thanks in advance!