This universal bit driver allows you to screw in something in limited space when a normal screw driver is not able to reach.
You can easily add extra grip by placing bits on both sides of the head creating an extra lever. It can be used on the side as well if there is such need, long bits are not a problem as well.

If torque is still not enough, head match 17 wrench.

Please keep in mind that every printer is slightly different, the same as filaments, they can shrink differently depending on brand, age, type and temperature, if bit socket is slightly too small or not snug enough, try to resize the project by few percent.