Moomoo, I was part of the investigation and fix for that blow-by problem. It was a anoying problem where snow would miss the chute and be blown toward the operator. Was most previlent in dry powdery snow on windy days. It was discoverd on my then new 2003 machine, a 1128 pro, where you have the standard model.
Not everybody reported it, but enough that a bolt on baffle was created to adress the problem.
As Frank stated. contact Ariens, and see if your machine was affected. it is a simple 2 minute fix if you do indeed need it.
And congrats on a Fine snowblower purchase.
Ariens 1128PRO- Honda Generator_ Husky 480-257 Jonsered 2050Turbo- Shindiawa T2500 SCAG Mower -little wonder blower-Sears track blower-Coleman Generator- Bombadier ATV-Stihl HS-45 Etc-Etc-Etc