I have 2 quarts of DCU2001 and would like to know what catalyst I can safely use and mixing ratio. I had DFX7, but now it's a rock! Thanks, G$

I have some info on this product.
DCU 2001 is a high solids polyurethane clear
Urethane hardeners DU 4 (60-70'F)
DU 5 (60-'85'F)
DU 6 (85'F and above)
DFX 7 supercharger
DT reducers DT 860 (60'-70'F)
DT 870 (65'-80'F)
DT 885 (75'-90'F)
DT 895 (85'F and above)
Mixing ratios
medium solids application
2 parts DCU: 1 part DT:1 part DU
high solids application
4 parts DCU : 1 part DT : 2 parts DU
using DFX 7
2 parts DCU : 1 part DT : 2 parts DFX 7

Hope this helps! I have more info if you need it
I don't know if DU hardener is still available.