I'm not up on tubeless, but I think they seem to be great. But, dependent on what you weigh, you had them way over inflated.

To tell you the truth, I'm fairly light and have always ridden my regular tube tires at 35-40 pounds at the highest and I ride rocky trails here in Flagstaff and surrounding areas.

If you are heavier, you need to ride with more pressure. I also have a dual suspension.

I've heard you can ride those tubeless at 20 and not worry about flatting? I don't have any experience, but I think it is true. Of course, you give up a bit of rolling resistance issues when you run so low, but I would try them around 25 and see what you think.

Do a little experimenting each time you ride and you will find the right inflation for you.