To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.
The mix ratio is higher than the set tolerance for an A to B component volume comparison.
Restrict gun needle travel to slow down the initial fluid delivery rate until fluid hoses are loaded with material.
Adjust component A and B fluid supply regulator pressures until they are about equal. If the pressures are already about equal, verify that component A and B dose valves are operating properly.