Update. I went out and bought the Mr. Clean MagicEraser cleaning pads. I used the pads along with brake cleaner and seemed to work pretty well. Less elbow grease needed to get the RTV off. Only down side of the pads is they get tore up fairly quick.
That's my method, if I'm out of the roloc discs I'll use a stiff cupped wire wheel on my 4" angle grinder.
. Only as a last resort, I really try to get it all off manually, a buddy many years ago borrowed an intake and screwed up the machine surface using the roloc's. It was all wavy and wouldn't seal, so he gave it back, and I knew exactly what he did when I saw it .
Well i do use the razor blades works pretty good but what the Mr. Clean MagicEraser cleaning pads does not remove the paint "non evasive"
After all the scrubbing i did get get this stuff off looks like this available Permatex® RTV Silicone Dissolver https://www.permatex.com/products/gasketing/gasket-removers/permatex-rtv-silicone-dissolver/