The only thing I can think is that you are talking about loading the bar with less than 135 pounds, and in the absence of bumper plates.
It doesn't matter. Pulling from a slight "deficit" for a couple warmup sets isn't going to affect anything. When using the empty bar, you can kind of do a deep RDL (holding the bar at the spot on the shins where the plates would put it) if you want. Your weights will soon get heavy enough that this doesn't matter.
If you're power cleaning, and you should be, you'll need a set of bumper plates.
You can just use a stack of plates. That's what I did in the beginning.
The weights are light enough that you should be able to lower under full control, so you can make the plate land on the same spot (the hole that hangs off the bar) every time so that it won't roll off.
I want to see a video of the lawn mower being used for 45 lb rack pulls.
On the NLP, you're always coming to the DL after 3 work sets of squats and three work sets of a pressing motion. You are already very well warmed up overall at that point, so the DL warmups don't need to start with an empty bar and be as protracted as your squat warmups were. What are you working up to for your one work set of the deadlift, Jeff?
My warmups start with an empty bar and I’m reviewing video of every set to monitor my form in an attempt to postpone the next back tweak. While I looked forward to a response to my query, I cobbled together a couple of wooden disks. This will let me go through the motions starting with the setup for each rep.
What is your 5RM deadlift now?
53.5 kg.
I am progressing slowly but I'm ok with that as long as I progress.
I started SS mid May. Tweaked my back with DL 52.5.
Did RDL 50 kg. for 4 sessions and then back to DL for 6 sessions (interrupted by a visit with family in TX) and got up to DL 53.5 when I tweaked my back Squatting last week.
I now have fractional plates and I started 72 hr. recovery periods.