Replacement window parts

Hello,

I have multiple Simonton windows (model # in attached photo) with failing coil balances. Some windows can no longer be opened and the coil spring covers are cracking on additional windows. I'd like to replace the coil spring covers, coil balance springs, pivot shoes and several damaged pivot bars. Can you recommend replacement parts?

Also, if you sell window sash locks, can you recommend replacement parts for my windows?

Thanks
Dave