On one of my 03 2388s I had some problems with the air filter plugging up this harvest. If we did not remove the aspirator and clean it out also when we cleaned the filter, we would have to clean the filter again in one or two days. If we cleaned the aspirator, the filer would stay clean for 50 to 75 hours. The question I have is there something wrong in the aspirator that causes it to plug up and quit working thus plugging the filter also, or is the rotary screen letting more dirt in than the aspirator can handle. On my other 03 2388 we cleaned the filter at the end of harvest and it wasn't even very dirty. Thanks for any comments.