When I tried to get mine down (which you can see that I did, but did not change the ratio at all) I found it very hard to stay within the recommended guidelines for fats, and get all the non-processed carbs in.
I just could not get the calories in. The only treats ended up being sugar based, or alcohol. Chocolate is all the wrong kind of fat and messes the whole thing up
When I relaxed it and ate more beans, it got better
Butter is better than marg, but I save myself for cheese.
You also have the avoid tipping your omega 6/3 balance by replacing saturated fats with omega 6s (sunflower oil and chicken are mostly omega 6). This is a whole new can of worms with some people claiming omega 6 is worse than saturated.