Hi everybody, i m new to this forum, i ve recently bought a Micra C+C, here is my question. i find it when the c+c roof is up, the handle of the car is just as the same as a normal 3 doors micra, but when the roof is down, i find it the whole body start to shake & vibrate really bad, especially when i take the corner or go thou a round about. is it normal due being a open top as the chassis is a bit weak?