the camper on my cruiser now opens in clam shell style. i want to explore the possibility of having it raise in four corners without loosing the simplicity and stability of a clam shell style. i believe my pop top is heavier than normal it is about 300 pounds. any idea on how to get the mechanism to do this? i want to explore this idea before i put the canvas. i would also appreciate comment on the pros and con of a clam shell vs lifting the top on four corners. sorry having problem uploading picture.