Yeah, that's what I was thinking. No sure where the the OP is from but in Calgary The Bolt Supply House or Calgary Fastener are 2 places I would check. Then make sure it is tightened properly and maybe some locktight.
Interesting. I've never had a set come loose. I keep an 8mm wrench in the zip pouch on my rod holder bag and a few times a season check the bolts to ensure they are snug. I also check the auger bolt each outing to ensure the flyte connection is solid. Never had it happen to me but I've seen a few flytes head for the bottom of the lake over the years!