Using Easy Blade to remove coralline algae, etc

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This sounds really lame, but do any of you have trouble setting the blade on your Easy Blade so it sits flat on the glass?

It works great otherwise, but I must have glued the handle on 1 iouta out as the blade (tried a few new ones) only seems to be effective for a bout a half inch on one side so makes the cleaning job take wayyyy longer.

As I said i know this is lame, but is there a 'trick' to ensuring the blade makes contact with the glass all the way along?

Or another product that can extend even further in the back of the tank?

Thanks!