I read a thread about this very problem about 5 months ago and the simple fix was to just pull up the handle to a level position. I tried it and it worked beautifully! Try that first. Fast, cheap and simple.
Chuck 1950 Chevy 1/2 ton (all original) 1951 Chevy 1/2 ton (future streetrod) 1941 Chevy coupe 1938 Chevy coupe streetrod