Hey folks

Been sitting out for a while with a non-working printer. Had a meltdown and needed to replace some parts.

Getting around to replacing parts now and I'm trying to get ABL setup, but running into issues. I set the Probe Offsets in the firmware using these instructions: http://zennmaster.com/random-things/...-3-final-setup

Then I started following Clough42's instructions here: http://clough42.com/instructions/marlin-firmware-setup/

When I get to the Z Offset settings section, if I start at an offset of 2.00 in the Z-offset settings the LCD, then run G28/G29, I get a recommendation to put something like 15.49 in the Z Offset settings (I'm using a longer Z-probe arm than Clough's, so I thought this was normal). However, when I change the offset then run G28/G29 again, G28 goes fine, but G29 lowers the Z height too much and the probe hits the glass before it can extend all the way.

Any ideas? If I put the Z Offset back to 2.00 on the LCD, it stops doing it. But I'm assuming I'm going to have trouble printing if I leave it there (haven't tried yet), given that Clough's instructions are telling me to put in 15.49.