200mm Arm for Crossfire 2

Since I have a 210mm circular build plate, I couldn't print off the Crossfire 2 Arms. This made me sad. So I trimmed out about 20mm of the middle of the arm so it would fit. This made me happy. Well I think it did....
My concern is that I am very new to the RC (particularly the off the ground kind) world, and have no idea if this reduction will ruin the over all design, or even let the right sized propellers fit. Any Comments would be great!