PPI 2300AM

What would cause this on Q16 ?

Is it from stress or the legs being bent and then bent back ?

Everything appears to be factory ampnhas never been repaired as far as I can tell .

The client bought the amp off someone and wanted it checked over before install .

I cleaned the wire strands from the board that I found so far
 

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This amp was dropped off to go through it to make sure everything is fine before installing it

I talked with the guy last night and he wanted all of the caps replaced since they are 20 to 30 years old .

I told him it’s not really necessary to replace them if they still test fine .

Wondering should I replace the caps in this amp or leave them alone and explain to him that they test fine and I would be replacing caps for no reason.