So just how tight should this be? The foam gasket is pretty much squashed and the drain is tight to the pan. The seal comes from the silicone, surely not the metal to fibreglass joint?
Once the rest of the bathroom is complete I'll jump back on this drain. We only have access to the shower sporadically as it is, with tile work etc. going on, so it's important to have a functioning shower whenever possible.
Did I mention this is the only bath in the house with a shower or tub? Thankfully we have good friends with showers.
I spoke with Mike the inventor of the drain. Looks good enough - I especially like the no-hub version as it would eliminate all the brute force involved in getting the gasket around the drain pipe in the 2000 model and in drains like my Kohler. However it then leaves a mechanical joint hidden in the wall, but I guess these sorts of couplings get buried in concrete etc. so it would likely be just fine.
They're manufactured in China for what its worth, but Mike invented them and holds the patent. Seems like a combination of a sink disposal unit mount and a shower drain.