Okay, I have a Dobbs from the forties or thirties that has been weirdly bashed for some decades: the crown is way too low. I've managed to reshape it nicely -- some soaking, some steam -- but there's still a lighter line around the back where it used to be creased. And on the front there's an *indented* line -- the felt was probably tightly pinched there, and abraded. Are there techniques for getting rid of these? The latter might be reduced by pouncing the felt further, until it's all at the level of the indentation -- is this something an amateur wants to get involved in? I'll put up photos later.