Merging Wilco CRJ900 with POSKY?

I've just dug out the Wilco/Feelthere CRJ and wanted to merge the Wilco CRJ900 with the Project Opensky CRJ900 as there seem to be no repaints available for the Wilco model.I've managed to match the contact points of the POSKY model with the Wilco flight dynamics. The only problem is the nose gear bounces up and down on the ground and results in a crash. I just slewed the aircraft straight into the air and tried a landing, which was beautiful right up until the nosegear touched the runway and the aircraft crashed.Any ideas what I'm doing wrong? Any help from people who are more experienced merging different aircraft would be greatly appreciated.Cheers!