Removing (remains of) Intake tube gasket

Any idea about how to remove the left over remains of an intake gasket? I've tried razor blades, a nylon brush, a soft wire brush, but pieces of the old gasket are stubbornly adhered to the intake port. Would a Scotchbrite pad be in order? Is there a solvent that can help? Any other tool / technique I should try?

gasket remover.

Never used it. Maybe it's gonna work?

https://www.crcindustries.com/products/gasket-remover-12-wt-oz-05021.html

I have an assortment of scrapers of various width. A couple made from old screwdrivers. The best tip shape I have found is not a wedge to a point, but a truncated wedge to a .020-.040" blunt end. The square edge seems to do the scraping function well w/o lifting or digging. I keep them that way with a file.

Razors and/or sharp edges seem to dig into a soft material like aluminum. Not good.

Being a mechanic is hard work, I never found a magic potion for much of it, but a 2" red scotch brite disc is pretty close.

The auto repair industry uses small Scotch-Brite Roloc discs. It works on airplane engines also if you have a small die grinder.