Lens for Spartan 447nm 1w

Need help! The lens in my Spartan have become dim after some time. It seems that there is some condensate or something inside, because my attempts to clean the lens aren't successful. I've cleaned the lens gently with a cotton wool and lens cleaning fluid but there some scratches appeared (Is it plastic???!!!!)! After all this the beam isn't sharp anymore and there is a lot of scattered light around the dot.
What can you advise in this situation? Maybe write to dragonlasers in order to repair? Or find another better lens? What lenses are suitable? Where I could get them?
Thanks in advance!

Use pure (as pure as you can find) alcohol and a cotton swab to clean the lens. Use each swab only once.
Do not rub in a circular motion. Use only enough alcohol to wet the surface.

It seems a lot of new laser users with these 445nm lasers are experiencing problems with a dirty lens.
Keep in mind that any smoke that enters the aperture may accumulate on the lens.

Never burn anything close to the aperture.
Never use the laser in high humidity.
Store the laser in a dust-free and dry environment.
Do not put the laser in your pocket unless the aperture is covered.

I've used cotton swab and lens cleaning fluid for high quality optics and anyway I've got scratches! I thing it's stupid and unacceptable to use plastic lens in 250$ device. It's almost impossible to clean lens without scratches if it's plastic.

The lens cleaning fluid may not be ideal.
It may leave streaks or residue, causing the appearance of scratches.

Also, try to use light pressure. I am pretty positive that the Spartan uses glass optics. One of the members here took one apart.

If you really can't get it right, consult Dragonlasers.