Billy, the not so dumb Red Neck, try as he may, can only walk into a room one way. He'll be the one with that dumb look on his face. He can't help it because it's just part of his Factory OEM package . Being a newbie in the Land of Legends if it's potato, patoto or tater he likes to use the most goodest and bestest grammar in the English Language. He thinks they are probably synonymous (big word). He read from a very reputiable member of this forum there's a difference. But before he opens his big ole dumb mouth is it Rail Riding or Rail Running or are they both (big word) ?