It's possible. I would recommend getting the shop manual for your vehicle, they're much more accurate than other commercially available versions. I have the PDF version for the 1978 Dodge which was ordered on Ebay and it does not indicate a difference between the 2210 and 2245 as far as check weights are concerned, but I would consult the shop manual for your specific year and model.

Anyway, good luck I am still experiencing the same problem with my B300 despite rebuilt carb..

Edit: The Hygrade rebuild kits didn't come with a replacement check weight, not sure about the Walker kits.