Why do peole think you need RTV and gaskets.That stuff turns cork to mush.I used the cheap MP gaskets that came with the MP tray.Been together 10 years and no leaks.I use the Milidon tray on my 440.I use 3 M weather strip yellow to hold the gaskets to the tray.Makes for an easy clean up if you have to replace them.Just clean the tray and not the block or pan.Rocky