Hello Mike ; The selection of the basic parts depends on the part's consumption, the most used parts (frequently ordered) stay longer time in our P&P machine feeders which eliminates the time taken to grab the part and install it to the feeder (no wasted time so no extra fees) and the part moves to become a basic part. The assembly dept. team members are the persons who are taking in charge the selection of the parts type (basic/extended) depending on the consumption history of the part. Please send an Email to henry[@jlcpcb.com](mailto:support@jlcpcb.com) and point to the part number that you want to add as a basic part, this is not guaranteed that it will be immediately moved to the basic type but it worth a try. Thank you Mike for the time taken to write to us about this topic, we are always open for new suggestions.

Thanks - email sent. I think the problem has been you have far too many different electrolytic capacitors so they all have low volumes.  Making one a basic part will move most usage to the one part.

@JLCPCBsupport  I'm afraid he didn't understand what I meant as he said the part is already set up.  Could you perhaps explain to him it would be good to have at least one electrolytic capacitor as a basic part.

@MikeDB Ok I will forward the request to the team and they will take the necessary measures, as I mentioned already this is not guaranteed that we will see an electrolytic capacitor in the basic part because it depends on the consumption but let's try anyway :)

Thanks.  I've a few other suggestions as well but let's start there as I think almost everyone uses electrolytics.