Hello and sorry for the delay.
I´ve took another way to solve this that maybe you can try.Is a quick an dirty solution,but i think can work.
f12016um2.stl is the new body with a cut in the handles to fit your build surface.
The part looks a little weak in the lower zone of the handles,but maybe is enough since the body has 2 strong points yet.
Can you print this and let me know how it works?