140x2 - belt
170x2 - add TRX
190x2 - add wraps
After looking at a few vids, I tried wearing the TRX a bit lower on my thighs: it makes A LOT of difference, I had trouble going down with the 190.
Next week I'll give a go at a 200-210 single to get this straightened out: if I can go down well, I'll spring the weight up.