twfsa wrote:
I have some vinyl to trim I need to shorten it about a 1/4 of an inch for
expansion, can this vinyl be trimmed with a sharp pair of tin snips? Or is
there another idea out there?

I enclosed a picture, its the ceiling of my deck cover, the area that needs
to be removed is above the yellow line, there are about 10 panels 12 ft
long.

http://usera.imagecave.com/TomF/Siding001.jpg

I believe you have what is technically called a "pain in the ass"
situation. Nothing particularly difficult, but a lot of work to do a
little work!

Tin snips will work fine. You don't have to have perfect cuts as the
trim will cover the edge anyway.

R