re

[srf]

Theres a valve on top of the bomb & can sometime get clogged /Jam up. Sometimes changing & flushing tho' the fluid ( g200 or whatever it is ) may free up a sticky valve- or it may just free of its own accord It maybe worth doing this fluch & renew now & maybe avoiding the problem returning

Do a test of the Bomb & just make sure its hoding the right reserve pumping pressure,as thats the only way to confirm its a good one or not.