The Irvine replacement roller shade spring (RS-SR31SM) you received matches the order but may not fit correctly due to flange length and connector type differences. Currently, we do not stock an alternative spring that matches the exact specifications shown in your photos. For resolution, we recommend considering purchasing a whole new shade to ensure full compatibility and proper components. To return the incompatible spring, please send it to Elkhart RV Parts at the provided return address, including your order number (#100110539) in the package. This approach helps avoid installation issues and guarantees quality and fit for your RV roller shade needs.