Im going to try either tomorrow or sat when its dry is try force to turn it from where it connects to carb with pliers which im hoping this does work as I be out of options
Remove the adjuster off the carb.
Get some wd40 to soak for a bit , then get mole grips
Bit it hard , then turn left to force it to undo itself.
The road salt / muck near the front is what causes them to seize. Not always easy to get on their own.
Also, get some ACF50 or grease –> spray in to it , so that it will keep the area lubricated.
// Meditation doesn't mean you have to sit still....