I can see that 9V battery fine! Get closer. I dunno how that liner will work out. I guess when the cooling head is on it'll prevent the liner from moving. The stock .18 has that alignment pin and I guess thats all it's for. As long as the exhaust port is centered then everything else should be good. That cylinder liner was in that block right? Go for it. Yeah Popper doesn't like fuzzy Pics at all. Make sure to zoom all the way out. Wide, no zoom at all, and my Olympus is good from about 6" to 1'. Like I said the 9v and other stuff on the right are in perfect focus. Thats the distance that block shoulda been.