Alright thx for the input that helps a lot. Regarding the distortion, it is very random and minor and only at low volumes (or at least that I hear). It commonly seems to occur with the radio, more than on my phone, etc., so it makes sense that perhaps the speakers cannot handle the certain frequencies that are coming through.
Running new wires is not something I am willing/interested in doing for a variety of reasons. I think my next steps will be to:
1. Check wiring connections to ensure they are good (but I am sure they are).
2. If that doesn't fix it then I will consider removing the Rockford tweeters and just keep the 3.5 inch kickers.
Lastly, I was reading a post online about a FRS guy that wired in bass blockers. Therefore, I was considering buying these. Have you used anything like that? Apparently, they are a sort of crossover to minimize low frequencies going to the speaker.
https://www.crutchfield.com/p_007BB6...z-cut-off.html