912 ULS with 460 hours built in 2008 1000 RPM drop during Mag test

Good, I guess that I will order the triggers then.
Thanks

Have you checked the gaps?

The Trigger gaps?
NO, I haven't.  That might be fruitful.  Thanks

I have not been on site in a year and came to it today for the same issue. I had just made a 15 min warm up and did 3 mag drops at 3500 rpm yielding the usual  80/100 drop range. An hour later on the start the key Basil was loose. Cinched it up and made the start ,at 2700 it dropped to 1700  an ran like a box of rocks.This is a 2002 A/B 601HD 600 tt. It’s up for inspection and going in this week or next  hope I can contribute.I will be watching the thread

Ok, today I checked the trigger pickup gaps.  All were in the range of spec except one.  That one was at .011".  I bumped that into spec.
No change on the big rpm drop.  I also took a wire and grounded the "mag" ignitor wire directly so see if somehow it was the switch, but the problem is still there.
I did notice something new.  It seemed to take a bit longer to start and it sounded like it wasn't quite up to rpm where I expected it to be.  It then suddenly turned on in that it literally snapped to running faster and smoother. That was like 3-7 seconds after it started.  It normally fires right up with almost no starter work.
NO clue what that was.  I did just mess with the pickups and touched the braided feed lines.

So should I now buy a new harness with pickups now or is there something else?

Thanks everyone.  I'm so glad that this site exists.