Quoted from J85M:I think that’s the smart move as your problem is very odd only being out of alignment in one direction, I hope you get it fixed ASAP as it’s a great mech/toy easily one of my favourites, love smashing the crane!
I don't think this is anything new. I had the same issue on my BDK crane toy. It wasn't off much, so I never really gave it a ton of thought. I would be curious to see what Stern says about it.