We had carpet and tile. In the tiled places there is still thinset. Should we pay to have the thinset removed? Or pay someone to lay self leveler? Or both? We are having Parkay Timber+ LVP flooring installed mid October & need to prep the floors. Flooring installer says leveler will take care of everything; however, the GC for our kitchen remodel says we need to remove thinset only, no leveler. Thoughts?