1. I've had this problem before. Once double bars have been inserted I can't delete them from the score. I tried overwriting with a single bar line which worked but they still "divided" orchestral rests on either side of them. The eraser tool doesn't work on them. Ideas? 2. Just occasionally a region refuses to be defined by a bar line. It's either too long or too short which means spurious small value rests in the score. What am I doing wrong?