This is an Easy fix for the solo. This shoulders stick out, Boil and pop his arms, the boil and pop the upper arms of a Hoth Han, then place the Han vtac shoulders in, then Boil and pop the lower arms of the Bespin arms, place them in the upper vtac arms. Paint it to match. That will work if the shoulders are big and thats what the problem is, if the shoulder joint is too shallow, you'll have to fix it with a dremel. That takes a bit more skill though.