There’s nothing inaccurate about a cheap meter, they are all good. I see no relays in that crossover ( or any other crossover ) and diodes generally don’t go bad.
a meter would confirm to op that all caps are good and I bet they are as they used quality components.
I wouldn’t change a thing about the crossovers and I think that is good advice.
Personally, I would not spend a nickel on those crossovers , I’d triamp them but then I have an active crossover sitting in a drawer and the amps to run it, I would not recommend this route to OP.