New at this hatching thing. Just got my incubator yesterday, sat it up to get it figured out before I order eggs. Bought a farm innovations pro series 4200 forced air. Got the temp to hold at 99.5 overnight, but my humidity is holding about 75%. How do I get it down to around 50? I've tried removing vent plugs with no luck. Is it possible I put too much water in the bottom, would removing some help lower it? Just want to get it zeroed in before I buy eggs. Thanks for any info you experienced hatchers can offer this newbie.