I sympathise, same thing happened to me, was a nightmare. I built it inside out the first time, managed to "sort of" build it the second time, wind destroyed it - bought another frame, wind destroyed that one, gave up. I am desperately rubbish at that kind of thing though. Now thinking of a polytunnel but nervous about building that. I'm sure you will have better luck than me - best of luck and enjoy it when its up.