Delta Tower Angle Adjustment
I am trying to calibrate my delta printer using the instructions and calibration wheel object found at https://www.thingiverse.com/thing:745523. This script is focusing on Marlin firmware, but I am using the calibration object to measure tower angles and arm length, etc. and attempting to adjust the Repetier firmware parameters accordingly. I have measured the tower angles and made adjustments in the firmware (Alpha-A, Alpha-B and Alpha-C), but it doesn't seem to have any effect on the calibration object, in fact the more I adjust the angles the worse it gets.
Is there something I'm missing?
Unfortunately, the firmware parameters in Marlin are quite a bit different from Repetier, so I am a bit of a loss to know how to adjust for sizing and squareness errors, etc. I am guessing that the Delta Radius parameters are intended for correcting these issues, but I don't know what the values should be or how to calculate them, and the form doesn't specify what the units are. Millimetres, I presume.
Also, are there a similar detailed calibration instructions anywhere intended for Repetier firmware driving a delta printer?