Knocking / clunking noise after installing engine skid plate
I recently installed Rival engine skid plates on my 2022 Subaru Forester Wilderness. The installation was done by my trusted workshop, and they generally do very high-quality work.
Since the installation, I started noticing a metallic knocking / clunking noise coming from underneath the vehicle. The noise was most noticeable during braking, acceleration, and when turning. I took the care back to the workshop, they added spacers at the mounting points to slightly increase the clearance to the frame. That solved the problem for a while, but it is slowly coming back.
At first glance everything appears to be mounted correctly, but the sound definitely started only after the skid plate installation.
Is this a common problem with skid plates?
Any thoughts or advice?
Thanks!