I picked up my new Rivale late June and experienced issues on the way home with poor running and hunting at lower speeds. I thought it had been fixed following its 600 mile service in July with a throttle body balance but the problem persisted. It went back into the dealer for two weeks in September and had the exhaust gasket replaced but still running badly. In October it went back in for a further two weeks and had the lambda sensor changed. On the way home the bike ran dreadfully with the engine surging and unable to maintain a constant speed at anything less than 60mph. I took the bike back to the dealer on 7th November with an assurance that if it couldn't be fixed this third time they would give me a new replacement bike. After 10 days I had a call to say that everything had been checked over and no faults found however they had another bike with similar issues. They had spoken to MV who were said to be working on an updated map which may be a couple of weeks away from completion. Today I have spoken to the dealer who advised that the new map is still not ready. They have gone over the bike again and have found that the butterfly valves in the throttle body assembly are opening and closing themselves by one or two millimetres which is likely to be causing the problem. I'm no expert on fuelling but I really don't think this is a problem with the mapping or it would affect all of the same model. As things stand I've had the bike six months now and it's been at the dealers for almost 10 weeks in total, albeit with a demonstrator bike loaned to me for that period, so feeling a bit pissed off. I'm going to give the dealer one more week then I think I need to insist on a replacement or my money back. This has been my first MV and I love the bike but it has not been a good experience to date. (Feel a bit better now having got that off my chest!).