i have a gs 550 and i have change the engine i put gsx550 in it. i dont have it´s original cylencers and air cleaner.right now it´s on it´s bands i wanna know that what should i do it´s not that fast in first and second gear it´s too fast but when i shift the third gear she wont responce how can i make it fast and also plz advice if dont have it´s original carburator which bikes carburators will match.plz i need ur advice help me out