Tips to get this fuel pump lock ring off? Soaked for days in PB

This is day 3 of not being able to get fuel pump lock ring off : r/MechanicAdvice

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Universal Fuel Pump Removal Tool, Adjustable Fuel Pump Lock Ring Tool, Fuel Tank Lock Ring Tool, Fuel Tank Repair Kit, 5.31 to 7.17 Adjustable Lock

Tips to get this fuel pump lock ring off? Soaked for days in PB blaster, lots of tapping, not budging. 04' sierra : r/MechanicAdvice

PB-580H Backpack Blower with Hip-Mounted Throttle

How to Remove Fuel Pump Ring DIY