You may not need as much prime as .25 oz. - On the original
penny (which I use all the time) by basically dumping the fuel into the top and lighting it, the heat from that serves to prime the stove as the fuel drops into the bottom just fine. in reasonably warm weather. I do add a priming tray to the regular stove (similar to your fosters can) when I carry one for winter time daytrips.

You might also want to try fewer, larger holes - like the penny stove design. I've personally found this works better for
me than many small holes,