bought a 08 230 sea doo wake about a month ago from a sea doo dealer up near buffalo ny. The salesman told me that a complete service was done on this machine including a sc rebuild , he also assured me that the engines were sycn'd but pointed out that the tachswere not.My left tach is alway running about a thousand rpms higher than my right tach.... Just wondering how concerned i should be about this? I dont notice the boat going more to one side than the other but I dont have much experience with jet boats. Also at wot the middle cluster(separate from the two tachs) is saying 7850 rpms if that matters.. any help is greatly appreciated... thanks