Picked up a cover for my omega tank from...

My pal Tom Simmon at myhighpressureair.com and like always he came through. Tom, has all the brand PCP airguns and high pressure fittings you can imagine of ..... Tom, has a++++ customer service also
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You need to build or buy a tank cradle to keep it from rolling or falling off of tables as in your picture. Your friend Tom sells them for $26 which is a good deal. Your tank's pressure gauge extension tube only brings your gauge a few inches closer but is hazardous. If your tank did fall any distance on a full fill that extension tube or your gauge could easily break off causing an accident and serious injuries.