Two images below, show a slight green-red split horizontally on the frame. I think it could be tilt, but wanted others to look at it.
This is from ED80 + Optolong L-Pro + TSLFAT2 + ASI2600MC:

This is from 8SE + L-Pro Filter + Starizona SCT IV + ASI2600 MC:

Looking at the common denominators: ASI2600 and the L-Pro. I cleaned the filter twice, and didn't notice any flexure in the glass. So it must be the tilt plate on the 2600 right?
This is from ED80 + Optolong L-Pro + TSLFAT2 + ASI2600MC:

This is from 8SE + L-Pro Filter + Starizona SCT IV + ASI2600 MC:

Looking at the common denominators: ASI2600 and the L-Pro. I cleaned the filter twice, and didn't notice any flexure in the glass. So it must be the tilt plate on the 2600 right?