hello all. i just downloaded the fs kbt model of the f18. its an awesome package. i installed all the addons. the textures, the hud and the speed update file. when i insert the new speed file it asks do i wish to overwrite. i say yes. it goes in. the speed doesnt change. the most i can get out of the aircraft is mach 1.2 to 1.3 when diving. has anybody here had the same problem? also is modifying the air file to increase speed, a good or bad thing? if good where can i get an air file editing program from. appreciate any responses. get some.