I'm having some issues with my 2002 Seadoo Utopia 185 jet boat and wondering if anyone here knows these boats and their jet drive and mercury optimax 200 motor especially well?

I noticed recently that I'm not getting much power when accelerating and when I get to about 5000rpm I am getting 1 solid beep alarm which indicates the motor overheating. I've experienced this in the past when some weeds or debris had been sucked up into the impeller and once its removed it runs normally again.

I checked for any debris underneath and there was nothing there. I did a flush on the jet drive with a garden hose at my house and tried it again and it initially seemed like it was running better without the alarm going off, but a couple hours later the same problem returned.

Something else to note is that I was low on oil a couple weeks ago and so I added 3L of the recommended oil. The overheating issue seemed to start after this, but I'm not sure if they are directly related.

Any suggestions or advice would be appreciated!