fine-tune

fine-tune (fntn, -tyn)

tr.v. fine-tuned, fine-tun·ing, fine-tunes

To make small adjustments in for optimal performance or effectiveness: "Advertising agencies kept fine-tuning the coolly calculated machinery of merchandising and hype" New Yorker.

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fine-tune

Verb

[-tuning, -tuned] to make fine adjustments to (something) so that it works really well

Thesaurus

Verb	1.	fine-tune - improve or perfect by pruning or polishing; "refine one's style of writing" refine, polish, down ameliorate, improve, meliorate, amend, better - to make better; "The editor improved the manuscript with his changes" over-refine, overrefine - refine too much or with excess of subtlety; "He is overrefining this matter" civilise, civilize, school, cultivate, educate, train - teach or refine to be discriminative in taste or judgment; "Cultivate your musical taste"; "Train your tastebuds"; "She is well schooled in poetry"
	2.	fine-tune - adjust finely; "fine-tune the engine" tweak tune, tune up - adjust for (better) functioning; "tune the engine"
	3.	fine-tune - make fine adjustments or divide into marked intervals for optimal measuring; "calibrate an instrument"; "graduate a cylinder" calibrate, graduate adjust, correct, set - alter or regulate so as to achieve accuracy or conform to a standard; "Adjust the clock, please"; "correct the alignment of the front wheels"