I recently posted a supposed "fix" on this subject

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/how-fix-dummy-lights-car-wont-turn-over-679038/

The problem reoccurred three times to day (shouldnt have been paranoid about the person...I was stupid) It is always fixed when I tap on the selenoid a couple of times, but it happens every time now. Do I need to completely replace my starter? Do you think its just the selenoid? can I replace that individually?