Here's my situation. The Grumman Mallard. Works fine in FS2002 as it should as it was designed for that, but crashes anytime you put it on water in FS2004. Suspecting that it is a difference in the contact points, I tried cutting and pasting that data from amphibious aircraft that I knew worked in FS2004. Well, the Mallard stopped crashing but, depending on what set I used, it was suspended above the water a few feet. In one case, my nose gear would only partially retract. The main thing though is that I proved the problem is in the contact points; I just don't know how or what I am reading with them. Any assist or pointing me in the right direction where I can learn what the various numbers mean and how to edit them would be greatly appreciated. Sincerely, Heather

Hello Heather, :-)The Aircraft Container SDK explains the contact points "fairly" well. You can also get a basic description from the default aircraft aircraft.cfg files in front of the contact point section.Here's MS's link for the Aircraft Container and other SDK's:http://zone.msn.com/flightsim/FS02DevDeskSDK00.aspI suspect the issue may be the crash points 4, 5, and 6 that may be causing the issue... but do not know for sure for that aircraft.Milton

Thank you Milton, I really appreciate the assist.I better break out the Tylenol, I know what I will be doing now.Cheers!Heather