I was cutting last week and somewhere somehow the prefilter on my 25hp Kawasaki fell off. This is the mushroom looking thing that is on top of the main air filter. To finish out the day I covered the intake with a clean cloth face towel to keep the dirt out. I know I know but I had to finish one last lawn. Anyway I have to cut tomorrow and the filter is back ordered foe a few days. What can I do?