We've got a 2001 Massey 6290, which has developed an issue with the shuttle. Today I noticed when working up through the ranges it would sometimes go down! I've had a look at the shuttle, there's a small pressure switch in there and I've found a company where I can get the whole shuttle for £205. But can anyone give me an idea of anything else I can check or change before I start spending? Any advice much appreciated. Thanks. Matt