Yay, another issue with the Hopper Plus.
Because the aspect ratios are no longer adjustable, here's a non-comprehensive list of SD channels which are in "sqush" mode with unnecessary black bars at top and bottom but the SD image otherwise stretched to the left and right edges (these SD channels are typically showing a 16x9 image and should be stretched to all four edges, with this only left/right stretch they are somewhere between 16x6 and 16x7). There are other channels that look ok, so these have some setting wrong from the source.
177 TOONW
186 HFM
262 CTN
263 DYSTR
268 BYUTV
269 FSTV