I would be more worried as to what Alk. your are getting from your IO. I myself have just switched because the last batch I made was at just over 14 and Cal at 495 my friend that uses RC has been getting Alk. of 15 and Cal 585.
I don't know what is up but seeing this happen more often recently, not just on RC but other Forums as well. I not saying to switch or saying its crap, just saying keep your eye on it.