The 88 in the harbour is the least problem. The German mortar/ the lack of the US mortar is the problem. I'd favor removing the German mortar too and giving the p4 back would make the map better. But the game won't fail because of a single 88 that can easily be taken out in the German mainbase. When the Allies got to harbour the game is going quite good already, that this 88 makes a big difference is nonsense and it's good as it prevents the US tanks from just driving on the flag, which wouldlead to an easy capture of harbour flag along with the regular ifnantry support. Furthermore it's still not hard to take the 88 out.