tIANci, I Bought them a long time ago, I should have asked first, I realise that now, but in the wrst case scenario, I can cut a few lightening holes in them...

Where I fly, a lot of people use Magics.... are those ok?

...and while I'm still asking questions... would it be better to start with a foamie?

And as far as I understand about engines, the four strokes give a more stable input of power, correct? So it would be better to have a four stroke... right?