i was replacing my sparkplugs yesterday, and i took off the intake sytem for more space. as i opened the tb to wide (just messing around), i saw basically 2 tubes, one on each side of the tb, and they seemed to be realllllyyy grimy on the inside. im planning to take the tb off, and clean those tubes with some engine degreaser, or smting. is that ok? or do you have any better ideas?