That's good to hear, I'll investigate this shortly. And if I can't fix it, I have a guaranteed fix that you're all guaranteed to hate. :P
I don't tend to use Squeak Through; designing layouts that you can walk through easily, or putting concrete roads through the middle of your main bus, is one of the puzzles that you need to solve in Factorio. So installing the mod is kind of like turning off biters: completely valid, but you're removing some gameplay in a sense.
Instead I'm more partial to the new Mech Armor. I know IR3 already has some flying vehicles, but I'm quite tempted to add compatibility and a recipe for this mod. Any suggestions for the recipe?