RE: DP 210 blue head overheats
I would use something with castor in it! What oil content is the CP 5% that you are using? You need 20% oil. I have used 5%nitro 16% oil (Byron's) and my moki 2.10 did not like it at all. It would heat up and start to pre detonate.
Also try a KB1 plug in it. (JoeAirport recommended this)- changed back to 20% and it cured it.
Look for posts by "JOEAIRPORT" he seems to be the forum Guru on the moki's/mark/dpm motors.
Julian