Stop in for a cup of coffee

Was trying to get the Journey done earlier. Put the coolant recovery tank on last night and drained it. Supposed to be near 10qt system. Got maybe 6. Blew air in overflow and through disconnected upper hose. Got at least another qt.
Got the zerex g-05 and distilled water today. Filled with water and ran it to flush. Drained that. Broke a spring type hose clamp when I tried to put hose back on again . So that ended that for the night.
Any good way to drain more out. Seams I am not getting 2-3qts...