thats caused by 2 things.. Sanctum Wear or a pin thats not properly setup.

Shadow is very finicky.. Jack the legs up in the back to give it more slope. That causes the ball to properly roll backwards when the magnet releases it to it trips the opto to throw the ball into the sanctum lock.

If your sanctum is worn the ball doesnt roll freely backwards into the opto causing it to not re-engage the magnet for throw.

So Make sure your sanctum has no roll effecting wear and jack up the rear legs increasing the slope.

Also check the switch at the bottom of the brick drop target. If this isn't functioning correctly it will drop the ball.

This is very important, if the game doesnt think the wall target is down, it wont send the ball into the lock. Check that switch and check your optos also. Everything has to work together or the game goes haywire.

My wall dose not seem to want go down and my coin door switches won't work

If the wall doesn't go down, the lock wont work. Get the wall assembly out, clean it up and check if it works correctly.
Coin door switches can be because of the white switch beside the coindoor (inside cabinet). Maybe this switch isn't working correctly, try if you can pull it. If you can pull it than the coindoorswitches should work again

Is the wall retract spring in place?

Is the small solenoid for the wall drop pin functioning?

which optos? im having problem OP mentioned. i just took out my brick drop target assy out recently and cleaned up and now im getting this problem so maybe i bent the switch? but which optos need to be checked? flipper optos? battlefield optos? im guessing not? are there more? oh wait...is there an opto infront of the brick target?

Yes, opto in front of brick wall.

ok cool thought so. so im pretty sure my brick drop switch is working fine. so maybe a finicky opto is causing the ball to drop occasionally rather than shooting up to the lock?

ok i checked my opto in switch test and cleaned them and they work just fine.

also checked and tested the switch at the bottom of the wall drop target assy and it seemed to be working perfectly

but still the magnet drops the ball occasionally

any ideas?