help finding my channel balance

Thanks for posting. Looks like part of your question was cut off, but look at our S380-29 and see if this matches up to your balance.

Yes, stamp options are an important part of deciding what balance you need. Typically, a stamp of 28C corresponds to our 2830 option, but I recommend that you weigh your sash to confirm that that's correct. You can see a chart of sash weights and related options under the S380-29.