Help with 90q turn signal lens

[Boris813 at aol.com]

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Through a freak non-driving incident, I need to replace a driver-side front
turn signal lens.  The new lens appears to have some snap-in catches.  Has
anyone changed one of these and are there any tricks to avoid unnecessary
profanity.  I'd like this to be a one-beer job, if possible.  Thanks for any
help.

Norm