I have a 12v Milwaukee 3/8" impact, I believe its a 2451, that is giving me issues. When pressing the trigger, the motor will try and spin, but not quite work...the first light of the "battery power indicator" will flash, but that's about it. At first, I thought it was a battery problem....but I've tried multiple batteries with no luck, as well as trying the same batteries in other tools. Now, you can feather the trigger occasionally and get it to spin, but not consistently. I assume this is a trigger problem, any other suggestions?