Having issues with some of the sash balances in my Viking single hung windows. The pulley wheels at the base are cracking and failing. So I plan to replace them all. They were purchased around 2001. In 2003 I needed to replace a couple of the balances. Picture of tag is attached. They call them a series - 150 sash balance. I would need (6) 2330, (2) 2320 and (2) 2030. These are the numbers stamped on the existing balances. Sashes for the 2330 weigh 16#, sashes for the 2320 weigh 14# and sashes for the 2030 weigh 14#. I did not see these types of model numbers on your site. What are the corresponding model numbers I would need from you? Please advise. Thanks
