I really feel for someone who spends a load of hard earned cash on a bike and has problems from day 1. You would expect a new bike to just work, Especially a bike like that!
My mates 7 month old stumpy elite is currently out of action, the fox forks collapsed and the rear wheel fell apart at Dalby last weekend.
As for the chain, I have the same problem on my 5 mostly OK but hit something really harsh and it’s off. I’m no expert on this stuff but have been thinking that a chain device is the solution.
Really hope you get things sorted, it looks like a great bike, be a shame if you got rid so soon.