I'll start looking! Definitely worth seeing what I can find
You need to find out where you’re failing first (technique, muscle failure, etc) and address that.
speed work isn’t just for explosiveness, it’s also to hammer in the technique. Every rep should be perfect.
once that’s down, find out what your weaknesses are... Are you a conventional puller? If so, I’d bet a good amount of money that your posterior chain (hams, glutes and low back) are probably your weak points... I say this because most people—myself included, before—don’t train them nearly enough. Hammer them.
I’m not sure how much you DL each week, but if you alternate Dynamic one day and Max effort / volume another day, you will get twice the work in.
when I started deadlifting and training lower twice a week, my squat and DL both shot up pretty fast.
-Back to weaknesses: if you can assess where you feel you’re weak (off the ground, mid pull, lockout) we can all help you with what assistance exercises to focus on.
As a general outline, my lower days look like this (reps/sets depend on what day it is, so I’ll leave those out):
DL
Leg Press
Hamstrings / posterior (RDL, lying leg curls, GHR)
-I rotate exercises every few weeks
Glutes / Low back (Back extensions usually)
Upper back work
-some sort of row or pull down
Also, if you want a big DL, work your back EVERY DAY that you train. Seriously. I can’t stress that enough...You don’t have to go all out on your “other” days, but even 2-4 sets of 8-10 reps on some pull downs or machine rows will help that little bit of growth.
This is all I have at the moment, man... But this is what has busted my plateau and brought me over the 600 mark.