Help! Tire Valve Extensions

[robfogle]

I have a 2007 GS Endura 6340. Chassis is the Chevy Kodiak C5500, Rims are 19.5" Versa Liner SS Wheel liners.

I am having problems checking and putting air in the rear dual tires. I have a truck style Pressure gage and cannot get it on the valve stems to check the tire pressure. Can't get it on at the right angle. I have tried to add the Wheel Master HM Airless and Dicor Air Gard VHS series valve extensions. Both of which are to long and won't fit the way that the instructions say to mount them. They are way to long, about 3", to fit the mount for the end mount on the liners.

Any help would be appreciated.

Rob