If the surface of the brake rotors was not flat and smooth the new pads will not grip the rotors properly causing a soft or low pedal, if you replaced the rear shoes and did not adjust them properly that will also cause a low pedal. If you disconnected any line fitting anywhere in the system then you must bleed the brakes to remove the air which is now in the system.

General recommendation: When doing disk brake service always replace the Pads and rotors as a set unless the rotors appear to be perfectly flat and smooth and there was no pulsation from the brakes before performing the replacement.

Well I just recently change my brake pads and rotors I kind of had the same problem. One thing though is that once you bleed your brakes to fit around the new pads it may take a bit of driving and breaking in the pads for it to actually feel right. That happened to me. As far as the scratching, it may be the pins on the brake pads that aren't perfectly fir and its keeping the pad uneven and scratching the rotors. so best thing is to take off the wheel and just check again, On whichever side the scratching is. If its not that then you might just need new rotors because the old pad ate through them and made a new scratched pattern that the new pads are feeling...... If any of that actually makes send to you.

The 'scratching noise' bothers me if it was not present prior to the brake work. It may indicate that a pad or caliper is improperly installed allowing "lost motion". In other words, when you push on the brake pedal the parts have to move too far before they come into solid contact, thus the pedal travel and feel.

On the stranger side...

I once installed a reman caliper that had a slight bend in one of the 'ears'. It mounted ****** and crooked and I didn't see it, it was only about .050". A lot of pedal travel before contact, kinda scary. Found it by carefully watching the caliper action while someone else worked the pedal. Only then did I see it, it flexed from a tilt to flat then clamped the rotor.

I agree, you might have air in the brake lines, so you'll need to bleed it.

Check the brake fluid? If thats not it then you might need a bleed.

So I did my rotors last spring and today I had changed my brakes since they've gotten pretty low.

After I had changed the pads and tightened everything down properly and pumped my brakes I noticed that they are not as stiff as they were.

Also I am having a scratching noise coming from the brakes but that tell's me that I have to either have the rotors machined or replaced.

So why the soft brakes?

Would changing the rotors out fix the problem ?

any help is great.