Makita Impact Drivers Failing - How to repair?

Hi everyone

Am at the limits of my knowledge with these as I have taken them apart but cannot figure out what the problem is.


First up is this one:
So as you can see it's got very little power. Now before you say it, I put new brushes in there and the battery, whilst old was fully charged and working fine. I used the same battery in another tool and it's fine. Plenty of juice. The driver lasts for ages, and has a decent amount of torque, but it's just super slow.


Second is my other driver:
Works perfectly when the battery is tilted with considerable force to the back of the unit. This made me think it was the white rubber bungs that sit just above the battery to create a snug fit. Noticed one was missing, so I replaced it, but it makes no difference. Swapped out the battery yellow connector terminal with one I know is working (P/N 643852), but no luck. Tried a different battery but same problem. All connections and wiring seem in place. Only thing I can think is that the housing has warped beyond repair.


Any ideas?

Thanks

With the second, if it was the battery connection the light would stay off. I'd suspect the switch (trigger), maybe try some switch cleaner inside it, or dismantle if you can and clean it out

Thanks magic mushroom. I'm willing to try anything but before I buy this cleaner, I don't understand how pushing the battery up affects the trigger whcih is all the way up inside the body.

Thanks