carb help, Holley dbl pump.

[Keith 944]

OK, i fixed it, sort of....
this is what i found, and did. after no success with fixing leak on the car, i took the carb off. i saw that the leak seemed to be coming from the small hole in the left bottom- out to the transfer slots at the butterflies. i painted the main plate surface and took a file to it till i was happy it was straight, drilled out the hole for the metering block pin. put on without a gasket, seemed good, no rock or uneven hitting anywhere. put new gaskets on filled bowl and watched it just drip out of the transfer slots again. ugggh. so i looked at my other quick fuel carb. no hole on this main body. OK, so i taped the hole closed w/ aluminum tape. no more leak, put back on car, no more issues! i would just like to know why this continued to leak and why is it not needed? if it is not needed at all i will prob. go back and epoxy it shut.. thoughts?