searching for leak in roof

[berghild]

could someone please help me find the source of my leak? Is there a trick to finding it....is there a special place to go for help? we have cleaned and calked like crazy....even our favorite repair shop tried.
it comes and goes....and then sometimes it shows in a different spot. sometimes it drips by the kitchen fantastic fan and sometimes behind the tv upstairs.
howard will attack everything he can think of and it seems to be fine for a couple of storms and then starts again.
We are in New England now and of course we get those summer storms...we are very worried about ruining our rig.
Where do we go for help?
And yes we are using the Dicor caulk, and cleaning before recaulking. I want to go up there so bad and look for myself ....I figure the more eyes the better.