The Yellow Malossi is very little more than OEM in tension. Try the 7 gram rollers, or 8gr Dr. pulley sliders. Either one will add some rpms to MAKE the spring work. Since you are that close I would buy either Malossi or dr pulley rollers, or the sliders. CHEAP rollers are good for tuning ONLY, and will not last. This one last set will get you up hills with ease.