Katapult installs, but Klipper won't stick on EBB36 V1.1

Similar to issue #58. I can install Katapult on one of my ebb36 boards, but after I flash to Klipper, it only works until I power cycle. After that, it always boots to Katapult. Settings for Katapult and Klipper are as per Esoterical's documentation, in CANBUS mode.