Jacket too tight across my back

LazyBed Posts: 2
edited November 2016 in MTB general
I have been trying to find a winter waterproof jacket, at around the £60 mark. I am normally a large to extra-large, but every jacket I have tried (even with just a base layer on) is too tight across my back when in the cycle position. The sleeves also bunch up and get tight across the front of my shoulders. I did try a 2 XL, but this feels massive on me and is still only a little better. I tried Altura Nevis 3, a Gore and B'Twin 700, plus a few others. I tried an Altura single track (£90 ish) and there is a definite improvement. has anyone else had such issues.