I've got it all working as I want but the dip settings are all weird!

My long axis (Y) is driven by 2x CW8060 and they need the dip switches set as follows for 1/5th microstepping.

SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
1 1 1 1 1 0 0 0

My X axis and Z are driven by CW5045 and they needs the following settings for 1/5th microstepping.
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
1 1 1 1 0 0 0 1

The manual of the CW8060 mentions a jumper for double or single pulse. I got these drivers second-hand so could that jumper be inside the unit and maybe changed by the previous user?