My friend recently built an brutus dual tier all grain setup with three 60 qt. SS pots that we have been brewing on. We have Blichmann boilermaker thermometers on NPT fittings with the probe extending into the pot on our mash tun and HLT. We have now brewed a couple of batches on this setup and are getting inconsistent temp readings from our Blichmann thermometer on the mash tun. When we open up and give it a stir with the mash rake this usually brings the temp back down but we are regularly getting hot spots that are throwing off our temp readings. I was wondering if anyone has used a Mash/Boil screen like this (http://www.northernbrewer.com/default/mash-boil-screen.html) to go over the temp probe in the pot so that only liquid would be making contact with the probe? Does this seem like a reasonable solution to our problem? We have been recirculating during the mash with a March pump. Thanks!