I am having trouble with forward, it will go once it engages the high

speed contactor ( im not sure if that is the correct term) but it does

not want to go in slow speed forward. It works perfectly in reverse.

any ideas? Sorry I am new to working on forklifts I bought this one to

use in my warehouse, I am an electrical contractor so I do understand

how to read a schematic just hope to get some input to point me in

the right direction.