there are a number of things buddi but the most important are
check both the cables are functioning properly , tacho and speedo , usually there is a pinion gear issue with the speedo meter, get it replaced there and then , check the alignment of the wheels and the tyre.usually the rear rim and tyre are not alligned and they create great nuisance afterwards ,ull be running here and their for alignment.these were the problems i faced , rest is common , think as if its ur wedding finalization with a girl u harldy know u have less time and more work to do , her parents will try to convince u with everything they have got but its u to decide whats ryt and whats not.