Anyone have any advice on what may be causing a jerky shift between 2nd and 3rd? on 2003 Toyota MR2 Spyder

Car is a 5 speed manual with only 20,000 miles on it. Jerky shift is only between 2nd and 3rd. I don't have this problem with other gears and the shifting from 2nd to 3rd is definitely better at low speeds and RPMs (i.e. 10-15 mph and 1500-2000 RPMs.

Asked by for the 2003 Toyota MR2 Spyder