Maybe it's because of the way I modelled the dents in the wood/metal but I cut seams in the same places you did and my uv's are kind of wonkey and stretched (a lot of cyan-ish, some green) I hope it wont prove an issue.
I've mostly painted the model at my current point, but lets do it for hindsight's sake.
I don't think it's quite as bad as I initially thoguht either, only really the middle bracket. Less of my pieces share the same uv space which I am quite aware
