[BendtheBar]

Starting to get to the point when I train over 635 on deadlift I pick up an instant lower back strain that will last for several weeks. This has happened 3x in a row.

From a number's perspective, 635 shakes out to about 90%.

If I am going to improve my deadlift I need to strengthen my lower back. It was the strong point for me, now it's the weak point. Instead of using very heavy good mornings and RDLs, I am thinking about doing something more like a 10 set x 3 rep approach with moderate weight.

Also need to suck it up and stop training over 90% deadlifts. That leaves me with 85-90% range. Most likely I am going to move back to what I did last year, pulling singles. Might start at 85% for 5, then do some drop work each workout. Loading when the singles feel good.

Looking for any other advice/input regarding lower back strength and how you think I could improve it.