The first thing to try is removing the film by gently taking the reels apart, not pulling it out of the reel.
If the scratches are still there you should feel the bearings - is it smooth? Does it rotate freely? If the answer to those is yes, you're going to have to feel through the grooves and find any bumps or sharp protruberances on the flat surfaces.
The last step in film development is usually using a chemical that decreases surface tension and helps the film dry clean. Kodak Photo Flo 200, Ilford Ilfotol and Adox Adostab are some examples.
If the reels are new I doubt wetting agent or cleaning has anything to do with your problem.
Sacrifice a roll of film and practice, practice, practice. Use a hair dryer on the reels briefly before you load them to make sure that they are dry dry dry when you use them, but also make sure they are not hot as the film goes on. If you live in a humid place try to find an airconditioned room to load your reels in.
That is probably it. Read the instructions again, and check the bearing and feel the reel near the bearing. As I said, try loading, developing and removing the film by taking the reel apart first - generally the film goes on ok but gets scratched when it is wet and coming off. Paterson reels actually aren't designed to have the film pulled out of them, even though some sets of instructions tell you that is what you should do.
Not very common that they will damage the film going on. It sounds more like the scratches are due to your removal method.
I hope this clarifies things for you. Let us know how you go.
Marty