Finding specific replacement parts like spiral balancers for AAMA-certified windows can be challenging, especially for older models. The series 2000 SH windows you mentioned are likely no longer in production, which makes it difficult to find parts at local stores.
Here are a few steps you can take to resolve this issue:
1. **Contact the Manufacturer**: Reach out to the manufacturer of your windows directly. They may have replacement parts available or can direct you to an authorized dealer.
2. **Specialty Window Parts Suppliers**: Look for specialty suppliers online that focus on window parts. Websites like WindowParts.com or similar may have the specific balancers you need.
3. **Local Hardware Stores**: While typical hardware stores may not carry these parts, some larger home improvement stores might have a selection of window parts. It’s worth checking in person or calling ahead.
4. **Hire a Professional**: If you’re unsure about replacing the balancers yourself or if you can't find the parts, consider hiring a licensed window repair professional. They can often source parts and ensure proper installation.
As a next step, I recommend searching for local window repair specialists on Handyman.com to get quotes and advice tailored to your specific situation.
— Assisted answer