At least there's nothing wrong with your sense of humour! After a heavy chemo-therapy 4 years ago my fingers were so numb and shaky that I couldn't touch models (or play guitar) for nearly a year. It slowly improved but I've had to find other ways of doing things like BMF as I can't cut (or paint) a straight line as cleanly as before. And I more or less had to learn to play guitar from scratch again but now get the same pleasure from both hobbies as before. Hope it works out for you too.