My Service Girl at the dealership calls mine a "Friday Trailer"..... All the little crap I've had to fix,finish or repair is the type of stuff you see when someone wants it out of their work area before leaving on Friday afternoon. So they cut corners to push it out.
She says they get them on her lot more than she would like to admit. But it keeps her busy with warranty work.
Not sure if it's still true but for a while there it was my understanding that the factories were pushing out sub par products and relying on the dealership network to make them right.
You hit on several factors that can readily affect quality.
1. EVERY day at Keystone is a Friday. What I mean by that is they have a "set number of units to complete that day. If they finish at 1PM, they go home as soon as the line is cleaned. If they finish at 2PM, they work later with no "overtime pay".
2. A number of line workers are "Amish farmers" who work the morning shift at Keystone, then go home to work the afternoon/evening in the fields, so it's to their benefit to get finished as early as possible.
3. Friday is just another Monday through Thursday. The sooner they get the units done, the sooner they get to the fields.
4. The "story goes" that during the COVID supply shortages, Keystone was shipping trailers with some parts missing/incomplete trailers for the dealerships to finish "when the parts were available. That "supposedly ended when the supply lines became more reliable"... In reality, it's cheaper for Keystone to ship the trailer to the dealer and pay them to finish the build than it is to try to store them in the shipping yard, pull them back in (which means disrupting production) to complete the build, then try to ship them after completion. So, I'd suspect that, as an example, there are no stereo units or no TV wall brackets, Keystone will ship the trailer to the dealership, then ship the parts (or drop ship them) when they are available...
When you think about it, paying the dealership 1 man hour to hang a TV is significantly cheaper than storing the unit on a lot in Goshen, pulling it back in and shutting down (or slowing down) the line of units flowing through to add one more, "just for a TV bracket"... The manhours to shuffle, store, reshuffle, install, then ship a unit is far more costly to Keystone than paying the dealer "1 man hour of warranty work" to finish the TV install....
So, even though the supply chain shortage shipments have supposedly ended, the concept and cost savings realized continue with any trailer that has an issue....
I'm NOT defending Keystone's practices, but I can understand the motivation with "why" they ship incomplete units and drop ship components for the dealer to finish....
In the final analysis, what's the difference in not installing a TV bracket or not installing cupboard trim or dining table or shower faucet or ?????