Jeff50316
Jeff have you been cleaning the 'flash channel' in the breech plug with a hand twisted drill bit? Over time a good amount of carbon wil build up in the flash channel almost closing it down.
CVA uses a 3mm 'flash channel' and when it is that small if fills fairly fast. You will probably need to clean the channel every 8 shots or so.
Drilling the 'flash hole' out, to a larger size can help also (and I would suggest .032") but you still need to clean the channel.
I believe the best alternative is to modify the plug as Ron has suggested. CVA uses a pretty soft metal in their plugs so it is fairly easy to modifiy. Here is a drawing of the basic operation.
This is a knight plug but the operation is basically the same.
This one might give you some more thoughts...