Rostock Mini Homing Fail

I am trying to commission my Rostock Mini but am having trouble with homing, the axes all slam into the endstops but fail to stop. I am running Marlin V1 for Kossel on a RAMPS 1.1 board and have the Signal and Ground or each axes MAX limit wired to the NC termanals of each microswitch. I have verified that endstoppullups are enabled in firmware and a quick continuity test shows that the switches are working. The only thing I do not know how to do is verify that the RAMPS board is reading the switches. Is there a way to monitor the switches in firmware?

Here is a video of my Rostock