I used to drive a Mack straight truck many years ago. The 5 speed in that truck was the worst I have ever seen. First gear was left and down. Second was left and up. Third center and down. Fourth center and up. Fifth right and down and reverse right and up. I cannot remember how many times I mis-shifted either up or down because of this. Never really got used to it because it is just wrong. Swapped trucks after a few months and all was well
Don
Don