... Windows GDI*, and I need to update the notes. It goes against common sense to use massively more memory for full colour unnecessarily, but clearly the GDI is now optimised for this and works much better when manipulating bitmaps in full colour, and when panning and zooming over them. 3. if Windows reports "Templot not responding", ignore it. It took a good 10 minutes on my system to straighten the image, and again to wrap it, but it eventually returned each time with the job done: 2_250611_330000000.png 2_250613_260000000.png I'm attaching below the BGS with the SK81 cropped image already straightened and in 24-bit format, ready for you to wrap onto your track plan. The wrapping offset is 996.6mm (for the Up Main). cheers, Martin. *Graphics Device Interface Attachment: attach_2712_3310_steve_cropped_24b it_straightened.bgs 168 posted: 25 Jul 2018 11:32 from: Martin Wynne And here is the corresponding SK81 image. Attachment: attach_2713_3310_steve_cropped_24b it_straightened.sk81 173 posted: 25 Jul 2018 12:52 from: Steve Lovett Martin. What can I say? ...