Newell Gurus

Howdy-
Any ideas or experience with bathroom/bedroom skylight cover that will not open?
This baffled both Ron and I but just now getting around to asking...
He said he had opened in the past with little/no effort...but it will not slide any...not a fraction...you can move the cover up (vertically) a small amount...but seems something has moved or shaken down that is keeping it from sliding any at all...

Thoughts?
Thanks in advance!

Fixed for now...
Ron and I had both 'fought' with trying to get the cover open while I was at his place picking it up...Sunday it was over 100f and I just tried it...and it slid open easy and smooth...go figure...appears to have some warp due to changing temps...
but extreme heat was the key....
Note: Blow torch not recommended!

Skylight cover still opening and closing, issue resolved at this time