Until last year, I always said the same, and similar for group rides. In 30 years of group touring, and local hot dogging, I had never thrown a stud that caused damage and had only ever seen two damaged heat exchangers from studs in well over 100,000 sled km.. Bare in mind that most of those miles were on 2 ply tracks. Single ply tracks are a different animal. Last year a tear out stud punctured my heat exchanger and ended a tour early, just north of North Bay. I replaced the track with an Ice Attack after hearing good things about them. I had owned a sled that came with an Ice Ripper, which I felt lacked enough bite. I had a couple of rides with the Ice Attack late last winter and the traction was acceptable. Nothing varies more from sledder to sledder than studding expectations, requirements and results. My current track is good enough that I won't be going back to full size studs, but I am just looking for a little safety on an a n/a 900 ace.

That means you just need to get her something too so she don’t feel left out. 

Your issue could be the power cord plugged into phone getting knocked around.  Was happening to my buddy.  Changed the way he put the phone and cord in and I believe it stopped. But then he gave sled to his daughter, bought a Polaris with 7s and had no more issues!

I dont like the longer track in the tight trails. I dont even like the 129 but it doesnt come in a 121. lol