Okay guys, this is a new one and i've scoured google as well as I feel I can, hit a couple of different places and not turning anything up.
I've had S3d for a couple of years and fairly happy with how well it performs. Just recently I've gone through the efforts of repairing my second extruder and started trying to calibrate dual extrusion prints. I've been using this: https://www.thingiverse.com/thing:533814
to calibrate. My first print went much better than i expected. just a little tweaking with flow and retraction. however.. since that first print I've had issues where Tool 0 prints the first layer fine.. then it goes to tool 1 for first layer and shifts it left and up almost 30 mm (eyeballing.. not exactly) then it prints two layers.. then it switches to tool 0, prints another layer that is also shifted right from the previous shift about another10-15 MM..
Now in troubleshooting. I took the exact same processes. and printed one at a time.. and both printed exactly center where they were supposed to.. It is only when I attempt to print both processes does this happen.
Printer: Powerspec 3d Pro 2
Firmware: Sailfish FF Creator X V7.7 R01591
S3D Software: V 4.1.2