How do you install vinyl siding corner posts if the corner is higher than 1 post?

The corner posts come in 10 foot lengths. My corners are 14 feet. When you install just 1 piece your supposed to leave a 1/4″ gap at the top. How do you do it if you hav 2 peices? just put them together? or is there a special way?

What is the best way to step up Vinyl siding 4 inches on a corner?

When you come to a corner on a house and the next side has a permanent deck 4 inches higher than you have been running, how do you trim out the siding?

A square round corner

A square round corner that is made from 4 pine timbers that are laminated and dowelled together. when attached to the outside corner of your home, the log siding fits behind the log. Simple, fast and economical. From Timberline Log Exteriors.

Kwik Corner at The 2008 Baltimore Remodeling Show

Kwik Corner provides the only clean, professionally finished corner trim product for vinyl siding. With over 150 colors, there is a corner to match virtually every siding product on the market today. Kwik Corner eliminates the need for butting or mitering you J-channel at the corners and provides a smooth finish look. Boxes of 50 [...]