Justin,

Velocity stacks do this and more...the key point to remember her is a"proper" velocity stack.

To make one properly takes one of two things. Either much scientific calculation, or a bit of experimenting.

The problem with most home made velocity stacks is that they are missing both and are mainly just what you said, for looks!
An improper inlet on a carb can wreak havoc on its airflow!
however, I would agree with buck, that shouldn't cause you to not be able to choke engine unless theres a visible gap.

In regards to your problem of why it won't start I know how to fix it.......
Place it in a box, ship it to Cap'n, have him play wif it, call Aeronuts and av8tor, dave, rysium and all the other smart guys...
Trade it for a dog......shoot the dog!
Cured