so this may be a silly error on my part, but when i was rewinding a roll of film in my pentax p3 for the first time, i noticed that it was incredibly hard to rewind it and it felt like there was a lot of resistance and would make this loud winding noise. at first i thought maybe i was turning it the wrong way, but i double checked and figured that something else must be the problem. after i finished rewinding it back into the catridge, i opened it up and noticed that there were negative flakes on the bottom of the camera and all over the pressure plate. is this is normal or did i possibly load the film in improperly? hopefully it's not something serious like a faulty camera? i'm sure it has to be some sort of error on my part. has anyone ever dealt with this before?