Just bought a 2000 ABI Yorkshire Rose 520EJ but the awning supplied 'fixes' against the van using flat plastic plates. Typically during a recent outing in high winds, they came loose, fell off the awning poles and we ended up with some scratching on the side of the van! I've managed to get the marks off but would like to put the proper awning fixings (which were supplied with the awning!) on to the side of the van. Question is, how do I know where to fit them and make sure there is something behind the skin of the van to screw them into to make a solid fixing point?