Modified KLP1 lid backstop to work with (https://www.printables.com/model/612282-riser-upgrade-for-kingroon-klp1) lid riser. Simply unscrew the 4 screws holding the lid on, attach backstop, then reuse said screws to attach hinge+backstops. 

The backstops can be installed in either orientation, providing 2 different options for how far back you want the lid to rest.

I printed with PETG, but PLA and ABS should both work fine.