The one on the right side is rpm, set it around 1400rpm, if its not at 1400rpm right now.
to set it just twist the screw on the right side of the carburetor i think in the clockwise direction.
And about oil filter jali he did the right thing as the bike is in breakin procedure so small metal particles get stuck in the oil filter which needs to be cleaned during oil change.
yes the gave me the warranty and free service card before the invoice.