BLTouch setup FT5

Folgertech FT5
Mks Gen v1.4
Marlin 10-7 Bugfix
Repitier-Host
bed X 295, Y 295

BLTouch classic mounted 54mm to left of nozzle
(0,0 on FT5 is at right rear)
Only probe offset is the Y 54mm

X, Y, Z homing works well (BLTouch is Z endstop sensor)

UBL leveling

Probe is sent off of the bed (both X, Y)

Where in Marlin are the Probe limits for UBL located

What else should I do for UBL set up?

:S