Y'all lost me on big end weight vs small end weight. How does one differentiate? I can see weighing the rod and bearings to get a total rod weight, not now you can split the rod into two weights.

I'm looking for a local resource to balance my stuff. I'm rebuilding an A65 with the A70 rods with steel caps as found on TheBonneville Shop site, EMGO +.20 pistons, and Hastings +.20 Rings. I had thought to have it dynamically balanced for the new parts, but the mechanic I'm working with didn't think it that big of a deal. I'm still thinking it's a good idea. Off to find a tool so I can get after the sludge trap.