Lower intake re-install?????

I recently pulled my fuel injectors to bench test them.While I had the lower intake off and I cleaned and painted everything. After puting everything back together it ran GREAT!!!!!For about 3 days or aprox 15 miles all together.One morning I'm takeing my son to school and I got white smoke coming out of the right tailpipe. The left has minimal white smoke.So I pulled the TB and I have coolant inside egr valve and I shine a light inside upper I can see coolant in the middle.So I bypass the coolant line running into egr spacer and still have coolant in egr valve and white smoke. When I reinstalled lower was I supose to put rtv on two gaskets that match up against heads??I **** canned the two rubber front and rear gaskets and used bead of rtv.Also I rtv all 4 corners. I have no visible leaks anywhere around lower and have no coolant oil mix in radiator or oil dip stick. Did I install lower right????Please help. Mustang is completely stock.

Thanks!!!Do you know how I am gettin coolant back into upper???Shouldn't it get sucked into combusion chamber and out to tail pipe??My egr is soaked??

It makes sense now since I held the egr spacer up to the upper Im assumeing thats where the leak is at on the lower to upper match surface thanks 4 the low-down I love this site!!!!!!!!!