1. not normal. make sure your regulator valve is CLOSED (not allowing gas out) when you open the valve on the cylinder. failure to do this can damage the regulator. Also make sure you have the nylon washer installed.
2. normal. search the forums...gas pressure is directly related to temperature. as temp decreases, pressure decreases. at 70F, CO2 should be at 900psi. at 40F in the kegerator, it should be more like 450-500psi.
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10