Hi, I bought a high performance idler from bikeberry i had a hard time installing it but did it. I test it out on the street and the spring shot out so i have no clue what kind of spring i will need now and dont wanna order one from bikeberry. I was at lowes today and saw one that may work but not sure, Also what is the best way too install a spring loaded idler right now im using stock thanks guys for help.