Just some advice really, I've been reading up on care and everything before buying, but still have some questions. Firstly, how simple a job is it to change a tsuba? Is it simply a case of knocking the pins that secure the tang to the hilt out, and everything comes apart from there? Cleaning...Is it more difficult to clean a sword with a bo-hi? I also remember reading (on the old RPF, probably years ago) that it was a bad idea to display a sword in its saya, is this correct? I've read nothing to either contradict or confirm this. Sorry if I've used incorrect terminology for anything...still learning. Thanks in advance for any help.