Replacing both studs with new is probably the best way to go. Looks like the left (forward) one has some damaged threads. But full disclosure: I've used Guiltplayer's redneck recommendation of bending the existing stud back to sort of straight.
I`ve replaced them too. Snap them off and drill it out. I guess I am a redneck, more of a cracker but,
some of you guys seem to want to tell people to do the hardest thing to repair. Why IDK. Is it ? I know you guys know alot...but geeez.
If you have to replace the studs, drilling them out to the proper size replacement is very easy.