Naturally weighted VLBA images at 43.1 GHz. The top row from left to right shows epochs 1 and 2. The bottom row from left to right show epochs 3 and 4. The bottom contour is at 0.085 mJy/beam in each case and contours increase in factors of 2. The crosses and ellipses with inscribed crosses denote the locations of point source components and the locations and dimensions of the Gaussian elliptical components, respectively. Note that the major axis of the elliptical Gaussian model for the core tends to point along the jet direction. It is also very elongated in this direction during the earlier stages of the flare.