Dual X Carriage not working (no replies)

last month i build my dual x-carriage printer with Rumba board
i try to modify marlin bugfix-1.1.x, but it has some problem

1. x2 carriage look like move to left when homing
2. x2 filament cooling fan not working when printing
3. t0 is ok, but t1 hotend not working when printing

i also try older version of marlin, but it has more problem
is that i use wrong setting or is that bugs?
here is my configuration and configuration.adv
[drive.google.com]
any hints or tips will be very thankful