Hi, regarding Step 6, I haven't got a heat gun and I'm not going to use a hair-dryer since I would be sitting there for hours. I noticed someone talking about the iOpener cushion(?) and wanted to know if it would be an effective substitute? Since it looks like a pretty wide item and could heat up not just the borders but the entire front?

Also people are saying there is some sort of gel on the actual LCD while others are saying there is only adhesive on the edges? Which is it and what should I do to not damage the actual LCD?