*Is this a proper sentence?

I can't wait to try on these cool pants that I got lucky finding at the store.

Quote:

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Originally Posted by Unregistered

I can't wait to try on these cool pants that I got lucky finding at the store.

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Yes, it sounds correct to me.
This is the diploma that I succeeded in achieving at university last year.
The "in" in "got lucky in finding" is understood in your sentence.