So I took my discovery completely apart. This included the valve. Well I forgot to get replacement Orings for it beforehand. I did a quick search and saw that one guy said he found the orings for the valve at a local hardware store. So could I get these at Lowe's, Home Depot, etc.?

Also while I have the gun opened up what mods can I do to increase efficiency? I'm not looking for max power but I am looking for a bigger shot count.

A curious thing: When I took apart the valve there was a burr on the inside edge.

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So close, yet so far away...

for valve/fill o-rings i use thesehttp://www.theoringstore.com/servlet/th ... e/Detail.i ordered on a friday they arrived monday very fast shipping
the ones from the hardware stores werent good enough
you could try a smaller transfer port for efficiency like one from a crosman 1377