Legs will fall off

We have had the trampoline setup for 3 days and our 7 and 8 year old have been enjoying bouncing. I have been questioning why the bar and legs it is attached to seem loose. Today on further investigation I found that one of the legs was no longer attached. I was able to disassemble the bar and get the legs tight again only to have one fall off as soon as I tightened the bar back on. We now can no longer get the leg to stay on at all. I reread through reviews and noticed a trend that if kids were using the trampoline (and I am guessing hanging on the bar) the legs tend to fall off. We are now researching a better model.

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