Hi :d,

I Have Just Installed A New Marathon Race & I Cannot Get The Negative Doppio Chamber To Hold More Than 50 Psi.
When I Inject 100psi Into The Chamber Then Recheck Pressure Status It Registers 50psi
So I Inject 150 Psi & When I Recheck It Registers 50psi...
The Other Air Chambers hold exactly what i inject , I Suppose That The Doppio Negative Pressure Range On The "race" Is The Same As On The "xc"???
Thank You Very Much For Any Correspondence On This Matter ,
the newbie driver