Repetier .91 FW Horizontal Radius

[KaibutsuX]

I'm in the process of re-calibrating my Rostock Max V1. I'm using the .91 FW which has a git head of:

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commit aaf31d00081d79f967a133050d16001e4d952113
Author: John Oly <[email protected]>
Date:   Wed Jul 9 09:09:16 2014 -0400

    updated motor current settings
    
    updated motor current notes for kysan motors

I'm currently stuck on the tower endstop calibration. I keep upping the 'horizontal radius' by 1mm every time and it doesn't seem to be getting the nozzle at 0,0,0 any closer to the glass.
I'm just curious what other settings people have in their EEPROM for .91FW. My relevant settings are:

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X/Y/Z max length mm: 371.597
Diagonal Rod Length: 269.000
Horizontal Radius: 128.500

I've seen one post on here about someone saying they thought horizontal radius should be around 74.2ish, but I have reset the EEPROM multiple times and my calculated horizontal radius has never been below 120. Does anyone know if the EEPROM bug referenced in the manual is still present in the .91FW because I assumed it had been fixed and I have been editing horizontal radius in the EEPROM without re-compiling the FW source.

[Mac The Knife]

when setting the horizontal radius, 0,0,0 will always stay the same, what will change is the z height at the towers.
I just got done fine tuning mine using a dial indicator, not the paper tuning method, and It really made it easier to understand what was happening.