I bought a used older R-Com 20 and set it up for a couple of days to let it stabilize. I ordered a combo Humidity/Thermometer from Strombergs to check the accuracy of the incubator. I found the temperature was pretty good but this humidity is WAY out. Is seems to understate humidity by 30% or more. Can I trust this humidity reading and do I just recalibrate the R-Com to match? Is there a better way to nail down the humidity? Seems like once the R-Com is calibrated it will hold it perfectly. Thanks for your help!