MrFixer!!! - Yes I am licensed on the B777, since 1996. PM me if you wish but I'll offer little more than I would publicly. I reflected initially on my first post, that, you might recall was regarding a member who was considering removing a reverser drive gearbox to lock out a T/R on an MD11.You simply don't know who is out there and offering technical information on a public forum has to be taken with extreme caution and care. I learn something new each and every day I go to work but always present is the underlying requirement to repair and certify aircraft in accordance with approved manuals and publications. If a B777/PW operator has issues with ignition problems ( and I'm sure they have ) then the onus is on them to provide the necessary tools to fix it, not individuals fishing about in the dark hoping for a quick fix. That's my five Bob's worth anyway . . . Stay safe everyone.