We recommend that you contact the manufacturer of the Poly Wand with Foam Insert for Foamer Simpson 4 in. (part #8) (FSPT008) directly for troubleshooting assistance and product support, regarding the problems you are having.
Rockwell labs can be reached by either calling 816-283-3167 or by visiting their website's contact page.
The Foamer Simpson 2 Gallon Pump Up Foamer (FSPU002) has since been discontinued and replaced with the Foamer Simpson 5.0 (FSPU005)