I was able to determine mine had an issue just by jacking the motor up with a block of wood on the oil pan, I could move the motor up and down freely at least 1/2in. Be careful with these mounts, I replaced mine as preventative maintance prior to adding more power in hopes of avoiding any risk of my ps pulley hitting the subframe.
Well, guess what happened shortly after the mount “upgrade”? I shifted into 3rd getting on the highway and lost power steering. I immediately killed the motor and pulled over, my new mount failed, allowing the pulley to hit the subframe and shred my belt, I got lucky essentially, no belt material got pulled in the crank pulley but that could have easily cost me an engine.
Going too stiff on a motor mount on something that isn’t a dedicated race car, bad idea IMO. The factory mounts aren’t just for comfort, they also help to combine with the harmonic damper to avoid damaging harmonic resonance that can wear out a motor much faster than if they were properly dampened.
It’s the same reason why going with a lightweight crank pulley is a terrrible idea unless you are full race car and building motors every season. I’m sure some will disagree but my advice would be to stick to IS mounts or similar.