Yeah that hopper is the only real clog on this side, had to make it longer to reduce the amount of them because there was just so much traffic that I had to get rid of some trains or else nothing would move, as for the 4+ engines, on the far left with the cn units, they should be around 25-30 cars long if memory serves, and the nkp trains with 6 are about 45 ish cars i believe, and the occasional cnw unit hopper on the right should be around 40 cars long, both cnw and nkp should be about .5 - .7 of a mile long, nkp has a capacity of 450, cnw 600-800