Hi there, I'm a new-bie here and have been visiting the site for many months for advice and info. After reading this thread about the leg lifting issue and resolving it! I thought it my duty to let you know how to cure this problem.
Pleo (he doesn't have a name yet) started the leg lifting thing about 5 weeks ago, and most of the time all he would do was lift his leg as in the video post at the beginning of this thread. I read all the comments that every one posted and became more worried that the issue was permanent. I was even more concerned as I could not return Pleo to the store he came from as it has closed down, so this left me with a problem.
However one day whilst he was leg lifting I began to feel the leg sensors whilst he was moving his leg. When doing this I felt the force in his leg 'give' slightly so in an act of desperation I applied pressure to the leg to move it into the normal standing position. Whilst moving the leg you could hear the internal leg clutch popping/cracking (which was scary!). After doing this, Pleo lifted his leg once (possibly to recalibrate) and has been working perfectly since!!!
I've been running him almost daily for two weeks and he is still walking around and being inquisitive as normal. So if you little dino is having the same issue give it a try. Just be careful when applying pressure when moving the leg, be gentle and you'll feel the 'give' in the leg. I hope that makes sense.