For a while now, my TX100 has been developing a red colour cloud (like a stain) on the image, gradually getting worse. I had a go at improving things using the CUNIF settings in the factory menu last night - this improved matters, but I don't think any of the numbered areas actually match to where the problem is - I adjusted those close to it which definitely considerably improved things, but it is still there. The colour cloud is to the lower right of the center of the screen (and hence just a bit noticeable ). Any hints as to what I can do, or is it just 'in the panels' and not (user at least) adjustable? Of course, my projector is now also just out of warranty. Thanks!