Aqua Terra Losing time and seconds hand did not engage when pushing crown in.

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My Aqua Terra is about 2 1/2 years old. Up till now, my watch would gain about 2 secs a day while wearing and lose about 2 seconds a day crown down overnight. I have worn this watch daily since purchasing.
Recently it has started to lose more time in the crown down position. Last night it lost at a rate of13 seconds per day. Another concerning issue is that I gave it a full wind, set the time but when I pushed the crown in it felt like grinding gears and the seconds hand did not move. I pulled the crown back out and pushed it back in, still did not work. I tried again and everything worked and it felt right.
I'm most likely going to send it in for a checkup but am curious if anyone else with an 8900 has experienced similar.
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