I have found the pistons very useful for many creative thing like making traps and making hidden passage ways but when it comes add the power source (red stone) it always need allot of extra work. I have seen ways to get around a few things but it always causes some sort of major dilemma. I believe the pistons should be looked over and patched. If anybody knows any other problem just comment saying what, because i know there are a few annoying thing about pistons.