Sorry to hear of your woes, Maebh. In fairness perhaps I should have added to my recommendation that I have a hefty 16.5 stone of lard to help the spanner both tighten and loosen the spinners!!!!!
Cheers!
PS As I am in the process of a weight loss program(used to be 17st) I'll let you know what the scene is when I reach Target (15st)!!!!!!!!!!!!!!!!!!!!