This dealer did my upgrade kit. Not in your area, nor in mine(Central NJ):
Hermey's Triumph BMW
69 Center St
Port Clinton, PA 19549
(610) 562-7303
They did it for free on my 08 Standard, but I was still in warranty.
The upgrade did solved the 1st gear pop out.
One side effect for me was a jerky throttle at low rpm in low gears; makes accelerating out of slow turns a pain in the ass.
The tech said the parts went in only one way, and a possible cause for the jerking was wider spacing on the replacement dog rings,
which have fewer engagement dogs on it. This supposedly improves engagement and stops the 1st gear pop out.
Sounds like the douche bags didn't install these parts.
Get a list of what they did install and talk to Hermey's service tech. Not certain, but I think Daryl at Hermy's did mine.
Good luck with it and hope you get her fixed.