Those aren’t the newest version fellas. I had a a gritty one too. Next one I bought directly from HDs was better. I think your supplier has a stock of older rotaries.
Getting my parents & my vaccination #1 tomorrow. San Antonio Texas. 800 calls over 2 days to the hotline & 56 minutes on hold when I finally got through. Moderns is what they have.
I had a gritty one, I passed it on. Still have 3 smooth action ones.
Wonder if the seller tried to grease it to smooth the grittiness, resulting in the excess grease.