Hi there,
I moved your topic into the SDK category. If you wanted to fix this, yourself, you would need to download the SDK and create a new project. From there, you can create an exclusion rectangle around the bad PAPI lights and drop in new PAPI lights.
I am not the best person to help on something like this, so I hope someone can jump in here if you need help.
If you don’t get much traction here, the best place to go is to devsupport.flightsimulator.com and sign up for an account there (anyone can do it).