A couple of small changes to reduce the amount of material needed to print this adapter. I hollowed the base and the side walls while leaving enough material along the perimeters to maintain the structure.
The other change is to add a "potbelly" to the front of the adapter. This is on the back of facebook comments CoralVue has made that the optical trigger sensor needed to face the opposite direction of the flow. The potbelly makes room for the sensor on the front side.
It's on the printer now. I'll update the thingiverse page after I get a chance to test it.