I know this is not a massive problem, but just thought I'd ask in case anyone knows! When I wash cotton T-shirts (on 40 degrees, 3-in-1 liquid) and then hang them up to dry, they tend to dry 'stiff' and not as soft as they originally were. Am I doing something wrong, or not doing something, or is this normal? I mean, I should know by now - been washing T-shirts for decades - but I've always thought it's just one of those things. Anyone got a magical cure?