There is the possibility it could be leaking between the UIM and LIM as well, and the coolant would be coming from between the two.
You should also be warned, that the parts most are referencing are for the Series 2, the L36. You have the series 1, the L27, a little bit different animal. The procedure will be pretty similar, but the parts will be different.
I think they make a screwdriver that bends 90*, and then another 90* for that very job. I cant think of what it is called however