... mode on the sketchboard, both for "no infill" and "solid infill" settings, and see if you can see anything relevant. Perhaps you could do that on two different computers? On the trackplan tab untick in diagram mode, and then click the update now button and again after making any changes to the infill. I recommend using the zoom rectangle button to examine the relevant areas, otherwise it may be very slow to pan and zoom. Click the zoom> zoom normal menu item to zoom back out: 2_130804_460000000.png regards, Martin. posted: 13 Jan 2016 14:09 from: Gordon S Thanks Martin, just got back from my bi annual checkup at the Radcliife in Oxford, so I will attempt to give you some meaningful data this afternoon. It's really not a problem for me re building ET and I'm not suggesting it's a Templot issue as no one else has the problem. I'm just curious what's causing it and it might just help you in the long term if we can work it out between us. All the ...