All easy problems as everyone has said.
Step back from it and relax.
Google the lock kick out.
Learn how to adjust/check/repair switches. Go into switch edges test, pull
out the manual and go to the switch matrix in inside the rear cover, and
learn. Notice the display on the dmd is the same as the matrix in the
manual. Play around with it. Learn it. Find the slot switch and play with
it. Check the wires on the switch. Activate by hand and then with the ball.
Adjust. Repair as necessary.
Learn how to rebuild flippers.
You can do a lot for the flipper strength by simply replacing the coil
sleeves and cleaning up the plunger and resoldering the lugs if any of the
wires look poorly connected. Finish by adjusting the eos switch so that it
closes right at the end of the flipper travel. Check for no mechanical
Settle in with Marvin and turn you head into a sponge.
Lots of good stuff
Take each problem by itself, one at a time.
It will be well worth your effort as you solve each problem.