Help with dryer vent on glass block window

I have a dryer vent for my new glass block windows. Unfortunately, re-attaching the dryer vent has been remarkably frustrating.
The window is three glass blocks high with the vent installed on the top-most, left corner.
In order to fit the vent around a gas-line pipe that partially blocking this vent, I have the fire-safe aluminim flex-hose connected to an elbow that I want to attach to the vent. The elbow doesn't seem to fit snugly in the vent.
Is there a trick to fitting it snugly? The elbow has two different ends....one is sort of tapered with ridges on the end while the other end of the elbow has a straight opening. I guess the tapered end is considered the "male" end...is that the end I should be fitting into the vent or is it the female end. It didn't seem to want to fit either way.
Thanks.
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Sounds like a STORMIN MORMIN TROLL
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Pardon? Sorry if my question sounds rudimentary. I really honestly don't know what I'm doing and I don't want to start a fire in my basement!
Thanks.

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snipped-for-privacy@hotmail.com (jeff) wrote in message

The silver ( almost metal looking ) tape found at most hardware stores is good to work with when taping the dryer vent joints.
**Corrected for spelling**
jeff. Appliance Repair Aid http://www.applianceaid.com /
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Thanks everyone for your help and patience of a home improvement newbie. Now that those years of renting are over, I'm off to do damage to my *own* house!
-J

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