Anyone else get a D54 Air King during the Umarex sale?

I was looking into one also.

Did you tweak your Bullseye mount at all?

I've heard some say its got play in it?

The only thing I did to mine were to spray some WD-40 silicon on the rails. They are pretty sturdy and I've never had any issues with the three I have mounted on rifles. My gun like the H&N FTT pellets. I had a magic tin of Crossman ultra magnums that were the most accurate pellets I ever shot in a springer. I've yet to find another tin that shoot as well.