[newton418]

We've never had that problem. One problem we did have was too much friction in one. There is a little clip inside the DeWalt transmission that helps keep the transmission in a given gear (the clip clicks into place). It turned out that the clip on that transmission had been bent at some point, so we simply bent it back to a desirable amount of resistance. Though it doesn't sound like this is the problem you were having, you might want to check it out.