Looking for guidance… deeply etched waterspots

[Chris-SwerveProDetailing]

I have a 2016 Range Rover HSE in for intensive waterspot removal. The paint is metering between 105-120microns around the vehicle. A 2-step correction has addressed 90% of the issues except on the horizontal panels ( hood and roof). This is OEM paint which I “never” sand, but did a test spot gently sanding with 2000 and then doing rotary/wool/heavy cut followed by gear-driven/ foam/ finishing polish with success. Per measurements, we removed about 15 microns. I know the risks, but no way to resolve these without a sanding step. Given I’m experienced and very mindful of things, should I cautiously proceed? FYI - I have communicated the risks to customer and indicated the liability resides with them. Should I proceed?

 

[Mike Phillips]

The last time I saw water spot etchings this bad is when I buffed out a Corvette in Irvine, California while working at Meguiar's.

I'm thinking these are Type 4 and that picture in Type 4 is the picture I took of the Corvette. Somewhere I have the original.

Let me get back to you.