Hi Tom,
Have to agree with Dave, that the cataract is so far along that the safety glass may pop off without much struggle(easy for me to say
) I think most FJP tubes you find at this point are going to have similar cataracts. I guess another option would be a 21FBP22(non bonded external safety glass). But you'll probably have to harvest one from a less desirable set, which is easier said than done.