1.Squeegee
2.Not really
3.J&J ceramic for J&J ceramic barrel
http://www.pbreview.com/products/reviews/251
or the J&J S2 ceramic barrel(I have so don't be afraid to ask about)
http://www.pbreview.com/products/reviews/3765/
Both self clean so if a ball breaks in the barrel it will clean it self out. Good price to.
The demon