No replies over on the owners forum
I would have thought anything that was small enough to get in through the intake holes would not lodge in too many places - I guess they are only 4-5mm holes.
The overtemp was only very brief when the initial alarm went off - I guess maybe it lasted for all of 30 seconds. No problems with engine running and there have been no more alarms - just that I have been watching the temp gauge closely and noted it was running a bit warmer than usual but I guess you would say it is within an acceptable operating range.
The highest it has been in normal cruising has been about 80 C and the temp seems to drop back as you get nearer WOT.
Oh well I might pull the stats out and have a look - hopefully you don't need a new gasket or anything to put them back in...? I guess if they are plastic bungs they are probably sealed with an O ring? If it looks like new parts will be required I'll just go for another sea trial now I have removed at least some crap from the system and see if it is OK now.