I have a futaba 3pk with a fast system in it. I am having trouble getting it to work right with a slash xl5 esc. It will not get any brakes. Wondering if it is a setting on the radio or if it just won't work. Any help is appreciated Thanks in advance

Make sure all the sub-trims etc are at zero and that your EPA settings are at 100%.

Also make sure the dead band( neutral setting is at normal)

Make sure you have brakes programmed into the ESC.