Never had this problem, and the location of your blowers the engines exhaust could possibly be the issue. Generally when I am using mine snow blower there is a lot of snow and usually some wind greater than 5 knots, so that helps.
No disrespect , but questions like this are what you get from folks that have no practical experience using the end product of engineers that wish to change terms. Pilots formed their own terms from actually flying the machines. Terms that made logical sense and allowed new pilots to grasp the...