Use a metal file. it takes two minutes.D) I've never gotten fisheyes and adhesion hasn't been a problem.

Lots of knock off fake products that look real. 25 cents a foot for platic crown, .99 a sf metallic painted ceiling tile, even the real thing was way cheaper.

I went to check layout and realized how contractor laid out tile left to right would put grout line on edge of metal strip from the house and I could imagine that cracking in the future, I made him take all of it up an redo it correctly.

The first flip I did, I walked right by the giant water stain in the ceiling, and said "oh that's probably just a few rivets on the metal roof that need tightened."

I ran the gas line & they installed the double intake/exhaust Al pipes to the top of the chimney & added a metal chimney cover/cap with a separate vent cap.

They are CPVC on one side and metal on the other and cost about $4 at Lowes. 

We also usually call one of our area junker/metal guys and they will take a lot of metal stuff for free. 

It can even grow on moist metal surfaces with air passing over it. 

I placed a very nice metal sign I had made up in the yard of a rehab I owned and the city came by and took it.

An issue here like some other parts of the country are that most of the main roads have metal lights and no wood poles.