Watched DIY instructional video clip via internet.
Replaced both elements. Only problem was with one of the elements (that was packaged separately) from GE (OEM) the machined screws in a small plastic bag were stuck in the bottom flap inside of the box. I attempted to use the old/original screws and stripped the threads on one of the ends to the new element. After realizing my mistake I improvised by using a smaller machine screw, flat, lock washers and nut to secure the connection. The other element(after market) had the new replacement screws in a plastic bag taped to the new element. Installation for that one was not a problem.