OM10 Gas Mask Filter Airborne Virus Protection Protect against Nuclear Bio Chemical H1N1 Flu Virus

Not so much a review as a question. I like the mask to begin with, reminds me of the mask I had while in the service. Now on to the question...most people have problems putting the filters in. That is not a problem for me as I have done it before. The question is, I also received some clear eye pieces that I am struggling with to put over the existing ones. Anyone else having the same problem?