1) Adapt 2) Adjust 3) Alter 4) Amend 5) Edit 6) Fine-tune 7) Modify 8) Refine 9) Regulate 10) Tweeze 11) Yank 1) Adjust a bit 2) Adjust a little 3) Adjust finely 4) Adjust just a bit 5) Adjust slightly 6) Alter a bit 7) Change a bit for the better 8) Change just a bit 9) Change slightly 10) Company of Ireland 11) Deal with a nose 12) Fine adjustment 13) Fine-tune 14) Make a minor adjustment to 15) Make a slight adjustment 
• (n.) Trouble; distress; tweag. • (v. t.) To pinch and pull with a sudden jerk and twist; to twitch; as, to tweak the nose. • (n.) A sharp pinch or jerk; a twist or twitch; as, a tweak of the nose. • (n.) A prostitute.
A slang term for calibration (a setting of all operating controls and adjustments for optimum performance of a device) especially very precise calibration.
Pain caused by getting served.
Tweak is motor racing slang for to tune a car or engine for peak performance.
Adjust finely.
[v] - pinch or squeeze sharply
A minor adjustment.
to pinch and pull with a jerk and twist: to tweak someone's ear; to tweak someone's nose. · to pull or pinch the nose of, esp. gently: He tweaked the baby on greeting. · to make a minor adjustment to: to tweak a computer program.
Pulling a board forward or backward while in the air.
To fine tune an engine or suspension or make any minor modifications that will result in a slight power or handling increase.
Either pulling the board forward or backward while in the air.