Is anyone having problems with dirt and grit getting past the air filter on 25hp. kawasaki. Mine started burning oil and I took it to the dealer and they told me they would re-ring it and they did but it is still using oil. How can I get kawasaki to stand behind the warranity. I don't make the filters, so it is not my fault. I service my mowers every Sunday after church and I also have all my receipts for all the air filters I have purchased.