350 Mag/Bravo 3. Last season the speedometer quit working; the pitot was clogged with debris. Cleared it out, and now it works- sort of. It is sluggish and lags quite a bit behind actual speed. This happens both accelerating and decelerating. At a steady speed it is about 3 mph off GPS speed. This is definitely a change, it didn't do any of these things before. Ideas? Is it still partially clogged? Something else to look at? Thanks!