A newer squeegee might help, one that is new and just bigger in diameter, to help get that sucker clean. I am sure there are a host of products you can use to get that barrel clean if its quickly removed (I.E. if you had to result to gun cleaners, for real guns, or something of the sort).
Why do people do this wanna-be hk thing? I mean hk people dont even play paintball, they just whine and start drama while wearing the ugliest stuff. Seriously you find light blue and pink to be attractive colors for your parents 1500 dollar investment (your gun/marker)? If you want to whine keep it off the field and save it for the internet; O wait! THATS EXACTLY WHAT YOU DO! Haha, if you don't play then don't whine.
I want your G6r parts and upgrades, sell them to me, because you wont get anything for them if you sell/trade them with the gun.