Hi, this is my first tractor and I am a little confused on how to adjust down pressure on my three point. On my settings 1-8 there is no difference from 1 to 4. I would like to have more pressure on my box blade, it just barely scrapes the ground. Looking at the back of the tractor the right arm is adjustable bt srewing it out or in, but that only changes the one side? I'm not sure why thats even a thing, it only makes your implement unlevel. Im sure there are reasons, and I am looking for some pointers please. I would like my box blade to dig more than it is (none) other than just adjusting the top link for angle. Thank you!