rollover

So me and my son took the sea doos out for a ride over the weekend... we were riding them hard and my son some how flipped his seadoo upside down .. we flipped back up and was riding fine the remainder of the day ... wanted to ride the following weekend and i tried starting it and all it did was...

Rolled our 97 XP. Wouldn't start. Followed some of the forums and got it started. Lake tested. Runs great except for a flickering oil light that I never noticed in the past. Higher RPM's no light on. Lower RPM's and idle speed it flickers. Sometimes on. Sometimes off. Thanks in advance for...