[Rockin Robbins]

In general, uninstall those mods. Is your periscope back? Good.

Now install one of those mods. Periscope? Continue. No periscope? Uninstall and continue

Install another mod. Periscope? Continue. No periscope? Uninstall and continue.

Iterate as many time as you need to to validate each mod individually. You'll have to not use the offender(s).