I’m attempting to replace the air/fuel sensor and have not been able to loosen the existing sensor from the exhaust. Watched videos, read a bunch of posts here and elsewhere, and the consensus seems to be that a combination of heat and Blaster PB should do the trick. I’ve tried heating the sensor to red hot and applying multiple rounds of Blaster to no avail. The way the nut is lined up is making it even harder to get good leverage on the wrench as the handle is lined up right next to the engine. Any other tips I can try?