Quoted from Spg101:
I have not been able to get a single "RESCUE" on the upper castle pf. Appears my upper flipper is not resting at full back hindering my power. Any recommendations? Here's a pic.
I agree it sounds like the coil stop is loose or has fallen off.
Glue the screws in with blue loc-tite, you can barely reach them from underneath.
Remove the castle PF to do a thorough inspection.
Check the tightness of all the screws you can see.
If they are loose glue them in with blue loc-tite.
If the loose screws are in wood, glue them in with titebond III.