Well, if you always check "Use Scaling" on the export panel, you won't need to worry about that ;). Snarly did that so that no specular would be too bright and cause fireflies.

And as for your building, I  have no idea what's happening there. It still looks to me like you might be using subdivision in the exporter. Double-check that you didn't save any settings with subdivision on next time you try and export that. Check that panel ;). That shouldn't be happening on it's own like that. If if had that building I'd test it out for you but I don't have it ;). Sorry.

Laurie