what springs should i order?

Hey there. I'm sure we can help, but first, can you show me pictures of the 'guts' or underside of the metal channel? Some Caldwell balances from the west coast have a special configuration we have to account for. Once we see whether or not that is the case here we can proceed. Many thanks.

That's perfect, thanks. This is likely either an S380-34 or S385-34 Channel Balance. The only difference between these two channel balances is the depth of the bottom nylon shoe. See below. Measure your old balance's shoe depth to see what matches best. For a stamp option choose 3330.

Comparison of the S378, S380 and S385 balance shoes.