Anytime you try to clean off old sealant it’s a good idea to mask off the aluminum skin a few inches out and around the object with a couple layers of blue painter’s tape to help mitigate the inevitable tool slips.
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.