I really like this car seat and wanted to love it....HOWEVER I've had the same problem as other parents with the straps being super stiff. Pulling with all my might to tighten the chest straps still doesn't work. My husband finally figured out that its easier if you use one hand to pull the straps right from the back while simultaneously pulling the strap where its meant to be pulled in the front. We are able to get it right that way, but it's rediculous. Car seats are all about safety and if you can't tighten the straps to correctly hold your child in its pointless. I had planned on returning them (we purchased 2 for our twins) the day we installed, but 15 minutes into the car ride, one of my twins puked all over it. So unfortunately we're stuck with them....regretfully.