Ok, now i'm trying out LP and having troubles. I'm trying out simple sorting system for a quarry, parts of it yet. I have DSU with cobblestone, Basic Log. Pipe (BLP) leading to it, Provider pipe, to suck items out, Pulverizer with supplier pipe at the top, and Provider pipe, sucking sand and gravel out into another DSUs. I have only one valid route for sand - BLP - DSU, and 2 routes for cobblestone - med. priority - BLP - DSU, high - supplier pipe for Pulverizer. I have some more BLPs, for future use, but all of them are for different blocks(configured). Problem is some blocks of sand and cobblestone just randomly wander in pipe system, passing near BLPs and not going straight into correct one without ANY logic in movements. Why's that?