I've been driving Amazon Flex for 18 months. Has anyone noticed that the type of offers that you receive and get vary over time? For example, a few weeks ago, I was getting plenty of grocery blocks during the optimal time frames (e.g. 11:30-1:30; 3:30-5:30; 7:30-9:30)? The last couple of weeks, I haven't gotten more than a few of those, most have been during the offset times (e.g. 4:00-6:00; 6:00-8:00). Also, it seems that periodically I get more restaurant offers and fewer warehouse and grocery blocks. I am curious if anyone else has similar experiences.