Campagnolo chainring bolt fell off JRA and questions

[rogerspam]

So... have been having too many JRA issues lately.

First, cruising along and started feeling a rhythmic bump sensation. I look down and "sigh" a bulge in the Vittoria tire sidewall. Good thing I wasn't bombing downhill.

Second, going up a steep hill a week later and the chain kept coming off the small chainring even though I was not shifting and already on the largest cog in the back. I thought it was something with the FR setup and fiddled with that later. Seemed OK on a short test ride around the bloc but then on a real ride, the chainring just came loose!

Questions:
1) Do people check their chainrings on a regular basis? I have to note I have never checked my chainring bolts for the past 13 years on my FSA crankset on my previous bike.

2) I have Campy Chorus 12 speed mechanical setup. It is very confusing what is the right replacement bolt set. Anyone know for sure what to get? I tried to run by one store this weekend and they didn't have anything for it in stock and there are various options online. The 1st one should be it yes?

FC-CH1200
https://www.ebay.com/itm/37452855330...8AAOSwUb1nB2JJ

https://www.condorcycles.com/en-us/p...42220462735510

https://wickwerks.com/products/campa...ring-bolt-set//