I think you should just practise scales, scales and more scales. Play the Harmonic minor, Melodic Minor and Major scales, play them differently (eg: legato-piano, forte, or crescendo, then diminuendo on the way back or staccato) and try practising the evil Arpeggios, 1st inv. 2nd inv. diminished, dominant.. etc( play them with an even Legato, Mezzo-forte)
Stuff like Hanon might help even your playing, idk ive never tried Hanon..