What grade is acceptable for a N scale layout. 2% is what? 2inches in ... I would like to run longish trains, and want things to be smooth without hassles from the start. There are 2 blokes extremely knowledgeable (word for the week) Aussies that know their **** helping me, and yer both know who yer are. Extreme Thanks - so far. Just aint seen you on ICQ for a while to ask! thanks.