Sounds good. Yeah I only get that error when snowing or heavy rain also. Which I would get with the oem grill as well.
So why does the radar shoot through the original T logo fine but have trouble with the TOYOTA logo? You were using the smaller logo, right? I wonder if the smaller logo has more metal in (or maybe just metallic paint?) it while the larger TOYOTA logo is all plastic? The PCS radar should work fine through plastic since it's non-reflective.