Yes my printer is an IDEX,
the reason the BL-touch is K0 is because K1 is a 3-axis tool offset probe mounted in the back of the machine
; Z-Probe
M558 P8 C"!io7.in" H10 F120 T1200 A15 S0.005 K1
G31 P500 X-73 Y-298.8 Z23.336 U0 K1
If I set an X offset on the probe won't the X axis also move when i perform a calibration?
Here is the way U is used in my printer, the BL-touch is mounted beside T1
; Tools
M563 P0 S"E0+E1" D0:1 ; define tool 0
G10 P0 X0.0 Y0.0 Z21.5 U0.000 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C
M567 P0 E0.5:0.5 ; set tool 0 mix ratio
M563 P1 S"E2" D2 X3 ; define tool 1
G10 P1 X0 Y-0.40 Z24.95 U1.50 ; set tool 1 axis offsets
G10 P1 R0 S0 ; set initial tool 1 active and standby temperatures to 0C