A complete engine takes some time to get used to but I don’t think it’s a good idea to start from scratch, unless for very simple things like Pong. However if you are using out-of-the-box Farseer v3.5 I suggest to move to an older version.
I am using my own fork based of Farseer Physics Engine.
http://community.monogame.net/t/aether-physics2d-release-v-1-0/
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