If you only have 1 gem attatched can you use the special 1, 2 and 3 powers at the end of the dial.

Yes.
A thousand times yes.
There is nothing on the Gauntlet that says otherwise.

Yes. The only part of the Gauntlet which is restricted by the number of gems attached is the Trait which it grants.

A simple yes would suffice, but thank you!

No it wouldn't, since there's a minimun character limit on posts and just "Yes" can't be posted.

Also this question has been asked a bazilillion times already...

Why do people complain about others being nice enough to answer their questions? *rolls eyes*

It's called having white people problems.

They're called "special" people problems, Chris. There were threads all over this when "special" powers first appeared, you don't shout you're using your black power every time you hide from your opponent's Officer Gordon in a Gotham City only game do you?

I see what you're doing and I will not take the bait.

And what if I do? You think I should be ashamed of it?