Mine is sticking... i was just wondering if it was common for a 7M to have its throttle stick ( not closing all the way ). Can't be the spring... its very strong and the small dampener works just fine. I don't know whats making it not close all the way. As for something foreign inside of it i can tell you my turbo has been wearing out for 4-6 moths now and there is oil in the intake. But would oil make it stick! i really don't think so. And It only does it when warm.