Sorry. I took one after after I filled the holes and sanded them but forgot to take some while priming and painting. I can try to get one with them in their final resting place tonight. I always forget to take pics until after I am done with something.Oh, and no pics?
In regard to porting the HT18s - I don't have room for that. They are already taking up more space than I would like in their 4 cu. ft. boxes. They are currently nearfield and mostly used to boost the sub 20hz content. Last time I did measurements, I think I was mostly flat to 13hz.