Wabbit

This is the first game im creating other than the ones i have followed tutorials for. I have got my ship and bullets all set up and it works fine using the script move_towards_point(mouse_x,mouse_y+50,speed+7). This works fine shooting towards my mouse cursor. I have tried creating another bullet which goes off slightly to the left using move_towards_point(mouse_x,mouse_y,speed+7) This works fine as long as i am aiming towards + x axes (the right), when i aim towards the top or bottom the bullets start to converge and switch places when i go to - x axes (the bullets are now on the right instead of the left). I have played about with the mouse_x and Mouse y values but at some point the bullets always converge and switch over. any help will be appreciated otherwise ill have to stick to my single bullet shooting towards the cursor .