I am assembling dragon's 75mm PAK 40 kit. The trunnions on this gun kit is half round, mean to mate with another half round piece that' forms the lever arm connected to the elevation compensating springs. But it looks to me like dragon screwed up and molded the half round shape of the trunnions backwards, so the lever arms has to extend towards the back of the gun, not towards the front.

Anyone else has this problem, or am I missing something?

I am afraid I can not see what you mean... have some references for the Pak40, if you can post a photo I may be of help.