Frozen Manifold Heat Control Valve

aint hard.....https://www.amazon.com/dp/B00BV4DBAU/?tag=fabo03-20

Rob says tap the shaft back and forth and work it, baby! That is 'sound' advice...get it? I took a bike chain off after 9 years of sitting exposed that would stay horizontal if you muscled it straight. Soaked it in Vinegar for 2 days and then motor oil for 2 more. Worked each link and its back to normal. Some links took a trip to the vice and a hammer to fold them over but they all freed up. That valve must be very free, as in tap it and it will bounce off its thermal spring tension. Suprised they dont leak when they are free.