1996 Challnger rave valves

[dcourt]

Hi, I bought a 1996 Seadoo Challenger jet boat last fall and it was started twice before winterizing for the year. It seemed to run fine for those two test starts in the driveway and now I have just removed the rave valves to clean and observed that pieces of the bottom of one of the arms have broken off. I'm going to replace the arm but I am concerned about the broken pieces and where they might have ended up. Could they get into the cylinders and cause major damage and should I disassemble the engine. Also I noticed the bow side valve has a spring under the cover and the rear side valve did not, is this right? Thanks to anyone who can help.