This is my toughest, largest and longest project yet.  I've built the Academy UH-60L black-Hawk and converted it to IDF "Yanshuf".
My model includes Eduard photo-etch interior & exterior Parts, Isradecals "Yanshuf" decal sheet and Model Master paints.  That was one of my toughest projects ever. The fit was very poor and there were some huge gaps between the passenger cabin and the haul of the chopper.  Almost in every step I encountered a fit problem and it was a great challenge to overcome it.  I think that the biggest challenge was to cut and reduce a portion of the front window and glue the the two modified pieces together.
A full building process can be seen HERE :
http://www.degem.net/vbulletin/showthread.php?t=2023

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Here are some more pictures some of them from the building process.
Lior 

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