Hello everyone. I have a hypothetical question. I have the chance to buy a Pelikan R200 rollerball in a somewhat rare color scheme. Is it at all possible to have that barrel taken and turned into a proper Pelikan M250 fountain pen? I've seen custom bindes placed on M800's but wasn't sure if the barrel could be cut down and fitted to an M250. I suspect it's not possible or, even if it were, too difficult/expensive to contemplate but thought I'd ask to ease my troubled mind and put the matter to rest. Thanks for indulging my mad scientist moment.