leaking transmission pan

[Alex Hayley]

So I have a PML cast aluminum transmission pan (http://www.yourcovers.com/transpan_9684.php) and grabbed a rubber transmission pan gasket from Autozone. I put the gasket on dry and torqued it to spec. I filled the transmission with Vavloline Max Life Dex/Merc fluid. However, the pan is leaking at the back along the gasket. There do not appear to be any instructions online for installing the pan. Should I use RTV instead of a gasket or use something other than a rubber gasket? Should I use a combination of RTV and the gasket?