Am new to this and I am attempting to build N train setup for grandsons.  Trying to make track w/ L&R turnouts.  I have bought two new sets of turnouts and I cannot make them not work properly.   Engins stop at turnouts, when switched from large radus to short radius mostmes the train stops.  Is there a manuel available which would cover these problems since there are no instructions provided on the box.  Owner of shop where I bought all of the equipment said that when he had a problem with switches (which has been often) he found that he could not repair them and he just bought new ones.   These I have are all new and I still cannot make them work.   My grandsons and I would deeply appreciate HELP!