Well been tweaking pots and stuff internally and turning the electronic focus pots up and down does show that the astigmatism wants doing next. The pj is a Barco Data 500, which is basically the same as the 800 but has smaller tubes and lenses. I've read that altering astigmatism will cause a raster shift and in turn the rasters will need to be recentered - you can do this a few times iteratively it seems to get best results. Currently I've been doing the manual raster shifts with the trimpots on the North/South and Vertical board in order that I don't need to do a raster shift in the software. The question: Is this the only way to do manual raster shifts on Barcos. I've read on other pjs that there are raster centering magnet rings near the deflection coils similar to the astigmatism rings/magnets. Can't seem to find these rings on the Barco. Any ideas? Thanks in advance.