Recoil spring help

The shorter spring is the oem on my Ruger 1911. It’s a 4-1/4” barrel and I’m trying to put in the lightest springs I can. The ten pound spring is the only one that I could fit and have it still be able to lock the slide back. On a full magazine, I cannot slingshot the slide to load a round. I have to drop the slide release. Any recommendations where I can find lighter weight springs, or do I need to cut these down?

The shorter spring is the oem on my Ruger 1911. It’s a 4-1/4” barrel and I’m trying to put in the lightest springs I can. The ten pound spring is the only one that I could fit and have it still be able to lock the slide back. On a full magazine, I cannot slingshot the slide to load a round. I have to drop the slide release. Any recommendations where I can find lighter weight springs, or do I need to cut these down?