So I got my Phantom 3 Standard for Christmas and being new to this I have crashed a few times (3 to be exact). They werend major crashes, one little scratch is on the body near a motor. But today I went ou near my local beach and started flying. I knew something was wrong because it wasnt hovering at all. The drone was really struggling to come down and even when I tried to land, the drone was flying with the wind. I hit a wooden pole and it fell to the ground. I went home and went in my backyard to see if everything was ok. I sent it up 5 ft and I stopped going up. I was expecting it to hover but it came down to the ground pretty quickly. Luckily I landed it successfully and I tried it again. Same thing happened. I came inside to look for videos or help on how to fix this. I found maybe the motors are stuttering. I took off the propellers and started to rev the motors. I noticed that they weren't stuttering, but my front right motor has a crackling noise going on and it's not as smooth as the other motors. I assumed some sand got into the motors, but I don't know how to get it out. Please help.