Hello all, I recently purchased a m t h gp38 - 2, the smoke holes are different than anything else I have experience with. There are two small fill holes on either side of molded top fan. The manual only mentions filling through the back one but doesn't specify that you cannot use the other one, I assume they both go to the same place. My main question is when I looked down into both of these holes just past the molded plastic shell I see what looks like a very thin black sheeting that partially obstructing the holes, more so on my back one. Is this normal? My concern was that every time I'm dropping smoke fluid in, that quite a lot of it is hitting the top of that little black sheet / obstruction and I'm not sure if it's wandering to somewhere it shouldn't, appreciate any input from people who have this type.
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