For your 2024 Puma Palomino RV roller shade measuring 50" wide by 24" long, you can replace the internal spring without buying an entirely new shade. We offer replacement springs in three sizes—0.75", 1", and 1.25" diameter—to fit most RV roller shades. To select the correct spring, measure the diameter of the largest part of your existing spring or the inside diameter of the shade’s metal tube where the spring fits. Once you determine the size, you can order the appropriate spring from our selection. However, small individual components within the spring assembly are not sold separately. Using a compatible replacement spring is a cost-effective way to restore your shade’s function, even if it is a Chinese import model. For detailed guidance, you can refer to our replacement spring information page and take the size quiz available at ElkhartRVParts.com.