I am replacing the caps on a zpa and everything went well except on the bottom of the board two off the squares attached to the board came off is there a fix for this or am i screwed? They are the little squares on the positive leg of the cap.

How can i tell if it has the original power supply caps and where are replacements available?

I recently purchased a zpa 05 ebay realized after recieving the amp has been modified to bypass floating ground switch it looks like they set it for rca input instead of balanced input. Any info appreciated. They removed switch and placed 2 jumpers close to where the number eight is on circuit board