BS”D
The KAJ has always had a reputation for the highest standards of kashrus and ehrlichkeit. And rare is the person who will not hold by the star-K.
However, in cases like this when all parties have a reasonable level of neemonus, it pays to see if you (or I – I eat raisins too LOL) can find out the reasoning behind the difference in psak.
For instance, back in Shvat 5766 Rav Landa came out with a psak that many whiskies were not kosher. I used to buy quite a lot of whisky for kiddush and in fact had a few bottles in storage and did not know what to do because usually I hold by Rav Landa. In the meantime, R’ Don Yoel Levy from the OK, whose hechsher I use but do not consider on the same level as that of Rav Landa, explained that Rav Landa’s reasoning did not mesh with what he knew and could demonstrate regarding the distilling of Scotch, and he gave a shiur in which he demonstrated how it was made. I went right out to the store and bought an expensive bottle of single malt after I heard that shiur and I continue to drink scotch.
On the other hand, I continue to avoid Coca Cola ever since Rav Landa said to do so because in that case no one knows the formula and especially outside of the US and Canada (OU and MK supervise Coke from what I recall and yesh al mi lismoch) no one knows what is going on with the bottling.
Looks like the question here is – did the infestation occur at the warehouse or during the processing. And will it spread to other warehouses if so far it is only in the Mishpacha brand supplier’s warehouse. And for me and others outside of the US – does this affect Turkish or Uzbek raisins or only California?