parts needed to fix my windows that have channel balancers

I am afraid we can't narrow down the Top Sash Guides you need strictly based on the balances you've purchased. This depends on the sash as much as the balances, and there is a great variety of these guides that you might need. We'll need to see pictures of your existing guides out of the window, with pictures of the front and side. From there we should be able to help.