Good idea for using these blocks if you still have them for home use. Not so good if you're 20 miles from home at the side of a canal. I should have looked around for something to prop my Handlebars up or loosened the display to move it out the way.I use the 2 styro block that comes with the bike. I think it was the ones holding the wheels...
On the positive side, I managed to clean off most of the scratches, and it was a lesson learnt. .
ANTI PUNCTURE TAPE ORDERED.