tweak|tweaked|tweaking

我需要微调一下这个食谱的配料比例。

I need to ___tweak the ingredient ratios in this recipe a little.

她顽皮地拧了一下我的脸颊。

She playfully ___tweaked my cheek.

警察在公园里抓到他吸毒。

The police caught him ___tweaking in the park.