Yesterday while trying to balance the engine, the shop informed me that one of the rods is 13 grams lighter than the others, and can't be balanced with the others. 5 are forged with no. 3836456 and 1 rod is no. 3836964. The rod I need to replace is one of the 5 numbered 3836456. Reading previous posts, I tried Automobile Archives, but they haven't returned phone calls. I called a few vendors and salvage yards without luck. Any suggestions will be appreciated.