Here's a Dwyer on my Keystoker KA-6.
Now adjusted the baro to maintain .02 over the fire.
The pre-drilled hole in the door from Keystoker has the flexible brake line (bend with your hands without kinks) and enough give to open the inspection door enough to check the fire, plus enough flex to pull out the tube and swing out of the way for full access.
Yes, that is a SECOND line to the stove pipe. I have to change the rubber tube on the mano to the other line that is right there, too, if I want to measure at the stove pipe. Notice the short piece of "open to atmosphere" line hanging over to avoid dust getting in it (on the HIGH side- backwards as recommended here)
.020-.025 is where she stays now, though I did have to add a washer to the weighted nut on the baro to get down that low. Boy, these things are TINY drafters, LOL!
Used the included sheet metal screws in the Dwyer kit to mount. Did pre-drill the holes, though with a small bit. Standard metal wire clips (bent closed a bit more) to hold the lines and the wires on the cover. Chose the edge because it is neat and doubled up thickness there.
After stressing over the mounting location a bit, finally chose this spot and am well pleased with it. Everything is out of the way and can be checked at a glance.
Hope this helps the next guy