Need advise on how to clean frame

[Ray Masciarella]

I'm looking at a Parker that appears to have 75% CCH but it is very difficult to tell because of what some my call patina and others my call grime. To me it is more like grime and takes anyway for the nice overall appearance of the gun.

I cleaned it with Hopppes. That got rid of the easy to remove dirt. Then I soaked patches with Hoppes, let it sit awhile, and that began to reveal a lot of the CCH but I know there is more under the remaining grime.

I don't want to use something like Flitz because I'm afraid it will cut too far. I don't want to polished it; just get the grime of. Will someone share their magic potion with me? Thx, Ray