Take it to a decent bike shop and let them have a go. They have secret techniques handed down through a lineage of shaolin monks and other layabouts. PlusGas is very effectivel. Something that motor mechanics have used for years. Then a big bar and a big bear, and even a big beer. Also bolt the tool into the BB with a crank bolt to stop it slipping when you put lots of torque on it. Good luck
Take it to a decent bike shop and let them have a go. They have secret techniques handed down through a lineage of shaolin monks and other layabouts. PlusGas is very effectivel. Something that motor mechanics have used for years. Then a big bar and a big bear, and even a big beer. Also bolt the tool into the BB with a crank bolt to stop it slipping when you put lots of torque on it. Good luck