i recently got a 1990 tomos targa for free. i restored it and it works fine exept for i removed the airbox and it does have a little more top end. the reason i removed it was because i felt like ever sice i put it back together the power seems to decreses slightly.so i took it out adn now when i hit the throttle from a stop sighn it has barely adn REAL power until i hit full throttle. But after i get going it perfectly alright though a little louder.adn sometimes just before i hit full throttle it stalls. sometimes but not all the time. but all the time when i put the throttle there it dies down then speeds up. all this happens when the engine is cold and also when its hot. im gonna put the air box back on adn put in a slightly bigger jet. like the next up from a stock on a delorto. any recomendations or warnings or sugestions will be apreciated. thanks