Any of you guys do heater cores?

I used to do jobs like that all the time on the side. Then people got to where they wanted everything for free for one. Two, I went through my 40s and suddenly every bone in my body hurts. So screw that mess.
Yeah I never had issue with being the family mechanic but when the salesmen and others wanted to bring their mother, brother, sister, cousin, neighbor vehicles to my driveway... I finally learned "just say no" would apply.
And the broken body thing came my way too. Today I take my own cars to the local garage for repairs. I recently found a place to get a heater core R&R if needed. Delaware is a bit far away though LOL. Again, Good luck to all.