Depending on the state, how the bars have been bent.
When trying to straighten the bars, some force is required and some part of the engine to which they are attached may be damaged.
I want to understand that you cannot remove the screws that are attached, right next to the air vents.
You could do the following:
Unscrew the nut that holds the bar left and right, but ...
Only from the bottom of the engine.
After removing the nut, remove the long pin holding one of the internal parts of the engine. Don't be afraid that the engine is going to move, because it won't.
Once this is done ... You will be able to straighten the two bars very easily, without the need to pry, you will only do it with your own hands and they will open enough so that you can loosen the screws next to the air vents.
The nuts that hold the motor go to 80 Nm.
A good recommendation is that the screws that hold the bars in the frame part are replaced by Allen screws to be used with a number 6 Allen key.