RE: WorldModel GS Spitfire...how does it fly
The master airscrew is NOT big enough for the Moki 210, it will cause it to over-rev and will possibly damage the engine. If you can't get a hold of an 18x12 try a 20x10, 20x8, or a 22x6 maybe a 22x8. But for sure not the 18x8 it will definately lead to problems. Let me know what happens.
Michael