Exactly!

This pump has never done close to what it was rated to do from day one.  It still is not anything close to what it ought to be even with the faster pulley.  Granted it used to be a little better than it is now, but I never got close to what I paid for.  For now, I'm just trying to get done.  The corn is wet, so dryer capacity is also limitted. 

It's not the air filter.

It's not the placement of the air filter.

You can remove the air filter entirely and it will still plug just like it will with a brand new filter.

It's not the motor.

It's not the size of the motor.

It's not obstructions in the line.

It's not the length or number or placement of turns in the line.

It's not the air lock.

It's not spikes in th e discharge rate from the dryer.

It's not the (fill in the blank) issue this year anymore than it was last year, the year before that, the year before that, or any of those other times.....

I do not really care how many times I am told how many of these units are working with no problems or how no one has never heard of one of these pumps not working up to rated specifications.  It is not working here!

It's the #%#^%$% PUMP!!!!!! 

It's not done what it should from day one.  Being the good natured and patient man that I am, I let everyone give me the run around for years.  I am absolutely fed up with this whole deal.  I'm sure if I keep working with this pump next year and ask the dealer for some help, the response will be something like, "Did you check to see if the filter was plugged? You know a lot of times bee's wings get in there and cause these kinds of problems."   At that point I will probably feel like choking the living $#%@# out of the next thing that crosses my path.  It's not going to happen.  There will be something different here next year.  Life is too short to do otherwise.

I do not mean to be negative to anyone kind enough to respond here.  I'm just fed up with this situation, the people involved, and mostly myself for putting up with it for as long as I have.