Thanks for your positive comments about 3DRC. For your needs I would perhaps recommend the Hitec 645MG, theyre available in the Uk for about £30 per servo... they have metal gears and very high torque ratings. For this size of model they should work fine.

I wouldnt worry too much about adding weight, the YS 1.40 is not excessively heavier and this model is so light anyway, it will not make the model fly a lot worse. One concern is that there is no real consideration for a tuned pipe tunnel so you would have to use a pitts exhaust or a standard YS exhaust.

Comparing how many negative things you hear about the somenzini yak and how few about the EF, the 'better' one is obvious. However, if you decide to take the EF Yak and YS .140 setup, do take care, it is unlikely that the manufacturer will accept responsibility for any structural failure which might occur.

The main Somenzini importer is Fusion Models http://www.members.aol.com/fusionmodels/index.html