Thanks for that info. It makes sense.
I noticed when checking the spec sheets between the LM258 and 358 that the 358 handles higher temps and voltages etc although it is basically the same. That choice was because of cost. The MPC602 supposedly did a good job of getting close to the rails according to a post I read somewhere. So I always wonder if that little difference is going to make a difference in performance…
I just soldered my first smd j201s to this low tide and it wasn’t that difficult. Just don’t drop one into the carpet. I think I’ll take your advise and get some adaptors. My fiancé has been an electronics assembler for 22 years. Talk about a solder soldier. And a show off.