it's silly to apply rtv like that. you need to remove the part, clean off old gasket and apply a thin even layer. thick enough to fill imperfections, thin enough to not squeeze rtv everywhere when you tighten it up.
however, the lt230 is filled with ep90 and that is red gearbox oil (atf).. so looking at your initial post of you replacing the oil.. you've filled it with the wrong thing (if it was red atf).
i'd step back and make sure you are clear on what you are doing before you completely feck up your gearbox and transfer.
btw, atf is a lot thinner, so that probably why it's leaking worse.