i must be missing a trick here. 1600tp. Cable terminates through the gearbox lever with a big wing nut. The end cable itself the front side of the lever is the shape for a spanner. So.... hold cable with a spanner. Now how the f... do u turn the wing nut? It’s not seized. I can rotate the cable with said spanner. But it’s under pressure via the lever. Need children’s hands to reach it!