As time goes by, you build habits...hopefully good ones. When bad habits creep in, sometimes it helps to play the excerpt in a different way.
One example is the famous/infamous Ride of the Valkyries. In a previous blog, I pointed out how your rhythm might be better if you related it to a familiar tune such as, say...The Mexican Hat Dance (see "Horns and Sombreros" in the archives.)
Here's a variation on the ride. Leave out the dotted rhythm and just play the downbeat notes.
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Why? This variation should improve intonation and may help with developing a steady tempo. Put it another way, if you struggle with this version, the actual version probably isn't going to be a big success. Conversely, if you learn to nail this, it should help with final product.
Hope this helps.