First off - love the mod! It feels like a very natural addition into Immersive Engineering and lends itself very nicely to automating production lines.

The issue I'm running into is:
Every time I launch the game the Electrical Pass Through furnace resets itself to one speed step lower than what it was previously at, stopping at speed 1. I can still set the speed back to whatever I want it at, but having to go into my production line and set all of the furnaces back to their max speed every launch is annoying.

Hi, thanks for reaching out and reporting. I have already an idea what this could be. Just to quickly ensure, you are running the latest ED version on 1.12.2, not 1.14.4? Cheers -

Oh, just took a glimpse, that's a sanitizing bug (sanitizing without sanity), not severe but affects all MC versions of the mod. It's fixed now and scheduled for the next beta iteration.

v1.1.0-b1 is up on Curse. Could you double check if the problem is gone for your setup and close the issue if so? Cheers -