My locking handle on my '37 doesn't seem all the great. Mine locks but I seldom ever use it, but then I don't leave the truck out by itself. I used to lock it all the time, but sliding across and climbing back in got to be a hassle. I now park where I can see the truck and try to get in and out of the hardware store as fast as I can. I have cloth seats, so no sliding across slick vinyl for me.