Skylight flashing detail

Hello! We have a vertical standing seam metal roof which we installed to replace a cedar shake roof about 5 years ago. We are experiencing leaks at our skylight which are set up on 6" curbs. The three posibble areas for water to get below the roofing in my mind would be at the ridge (unlikely, 5/12 pitch good ridge cap and foam closure strips), at a chimney near ridge which may affect the first two skylights below it (possible, though we had three separate roofers out that said it was done properly), and lastly the flashing around the skylight units. This is what I feell may be most likely though we followed the flashing detail supplied by the dealer. These roof panels run from ridge to eave continuously except for the two rows of three skylights (4'x2') in our sunroom. The roof panels are about 12" wide with one side being screwed down and then the next panel clicks down over it, these standing seams are about 1 to 1-1/2 inches high. Do you have any good detail for a how to properly flash skylights and curbs? I have tried to find a local roofer conversant in this flashing to come and re-do it if necessary without any success. thank you in advance for any suggestions