But you dont have to pull or push. Just tap the lever and the lock is disengaged. I think it works rather slick, after I figured it out. I'll be double checking all that was assembled. As for the locking mechanism, mine was the same. After contacting Ariens, a slight tug on the housing was all it took to operate perfectly. Shipping, setup, probably.
I looked at the MTD also, same as the sears model, and thought how can I spend 1000 on THAT after seeing the build of the Ariens.
I just picked up the 11528 from HD and feel fortunate. There was not an Ariens machine to be found in S.E. Mass. I called every dealer within a 100 miles. When HD said they just got some in, I ran to get one. Another store in my area sold out in 1 day a week prior. I'd much rather purchase from the local dealer, and maybe would have gotten the DLE instead if they had been available. But being in panic mode, I'm happy I got what I did.