Palms' grip - deadlifts/chalk

[AidZ]

I was attempting to deadlift 142.5kg for 5 reps earlier (one of my main sets, I had warmed up by this stage) but had to stop after the third rep as I felt like the skin on my palms was being torn off. I was using chalk for better grip and I presume that the chalk ensured there was sufficient friction so that the weight wouldn't slip but a consequence of this was that the full weight was 'held' by my palms and so the skin on my palms was stretched. It felt like my skin was burning and I couldn't go past 3.

Do you lovely boys and girls have any suggestions how I can improve my situation? I'd like to get to a level where I can deadlift and not be limited by my grip. Should I use less chalk? Should I man up and deal with it? Or is there something I'm missing and this actually isn't a grip issue but something I just have to get used to as I lift heavier and heavier?

Thanks!

Edit: BTW I'm on 5/3/1 if this helps. My goal is just strength.