The Autocut 25-2 is an excellent head for general mowing purposes. I was taught many years ago by a very wise man at Stihl how bump & feed heads work. A bump head doesn't care what you want, it is going to do what it pleases- you can only suggest it do a particular thing such as feed more line. For a bump head to feed more line a few conditions must be met- the engine must be revved up so the head is spinning fast, and there must be an adequate amount of line sticking out. A bump head relies on centrifugal force to PULL more line out- the line that is sticking out of the head PULLS more line out. The more line that is sticking out, and the higher the RPM, the greater the centrifugal force. If the head isn't spinning fast and/or there isn't an adequate amount of line, the head won't feed properly. Nothing tells that spool which way to turn, except for the pull of the line. If there isn't adequate pull, the spool may rotate the wrong way and suck the remaining line back in just to be spiteful since you aren't doing it right. All bump heads are female- they will do what you want ONLY when all the circumstances are correct. You can only suggest a course of action and get good results when you understand how it works and do everything properly.