Disclaimer: 4 cali cats n a few cubes later, we feel pretty good about this mostly workin
OMG ya’ll are so motivating n awesome n stuff 
Much appreciation for the suffering that was put fourth before mine… so here is some giving back.
I have a taz5 with an angelfish_aerostruder, printed this mount
https://www.thingiverse.com/thing:2811436
and modified the firmware here
https://github.com/AllenBW/taz5-aerostruder-bltouch
and am now sittin real pretty…
alternatively, if you only want the latest n greatest of the marlin 1.1.9, while using the original toolhead you can do the following:
- edit the probe offset here https://github.com/AllenBW/taz5-aerostruder-bltouch/blob/master/Marlin/Conditionals_LulzBot.h#L299-L300
- edit the zprobe bounds here https://github.com/AllenBW/taz5-aerostruder-bltouch/blob/master/Marlin/Conditionals_LulzBot.h#L304-L305
- be super happy with yerself for running the latest n greatest
start gcode (for lulzbot cura, might want to swap out var names for other slicers)
M75 ; start GLCD timer
G26 ; clear potential 'probe fail' condition
G21 ; set units to Millimetres
M107 ; disable fans
G90 ; absolute positioning
M82 ; set extruder to absolute mode
M104 S150 ; Set extruder to 150 and do not wait - preheat
M140 S{material_bed_temperature} ; start bed heating up
G28 ; home X Y Z
M204 S100 ; set probing acceleration
G29 ; start auto-leveling sequence
M425 Z ; use measured Z backlash for compensation
M425 Z F0 ; turn off measured Z backlash compensation. (if activated in the quality settings, this command will automatically be ignored)
M204 S500 ; restore standard acceleration
M117 Heating... ; progress indicator message on LCD
M109 R{material_print_temperature} ; wait for extruder to reach printing temp
M190 S{material_bed_temperature_layer_0} ; wait for bed to reach printing temp
G92 E0 ; set extruder position to 0
G1 F200 E0 ; prime the nozzle with filament
G92 E0 ; re-set extruder position to 0
M117 TAZ 5 Printing... ; progress indicator message on LCD