Having worked in Kubota dealers for 12 years, I took machine assembly very seriously. My first boss pounded that into my head. Nothing would piss him off more than delivering a machine and something not being right. He taught me to anti-sieze the turn buckles for the lower link arms, I also spray lubed the pivot balls so when he showed the customer how to hook up an implement he knew the turnbuckles would turn and it would be easier for him and the client. He also taught me about putting the nuts and lockwashers on the outside of any assembly that was through bolted, so while doing a visual inspection whoever was doing it could notice a fastener that was loosening up. Kubota uses USS washers on dealer installed items, for standard or metric bolts, I always threw them away and used SAE or metric washers approprietly. I also locktited any wheel studs, nothing worse than having to take a wheel off and the stud coming out wiith the nut. I always used a torque wrench on any ROPS bolts, not only for the customer's safety but to also reduce our liability if something happened. The last dealer I worked for always removed any fill plugs, check plugs, and dipsticks, and painted them red. Not only did it help the customer find them, it was also our way of making sure those fluid were checked. Sure all of these things added to set up time, but eliminated many of this type of issue. Most of the time when I'm out in the field now, I can still tell if I was the one that assembled a machine by many of the things I listed above.
Brian