limits

I'm still having problems with my home switches, I think I get
interference with my limits. The limits all work good. I have a DB1V2.0
from Axxus Technologies. All my limits are hooked together both + & -
hooked up normally closed as are all the home switches. any switch will
break the chain. The polarity in the ini file is set to 1 . I have 4
wires to the breakout board, two for the limits and two for the home. I
hooked the 2 wires from the home switches to pin 12 which has both + and
- terminals, I don't think the polarity should matter. I hooked the two
wires from the limits to pin 13. In this config. I could not get out of
e-stop so I added two jumper wires from pin 13 to pin 15 plus to plus
and minus to minus. This works good for the limits but the home in
weird. sometimes they will find the switch and work fine. sometimes they
will find the switch but fail to back off the .100 I set in the ini.
sometimes they just move .100 from where the are and home.
I hope someone could help with this. Thank You