I have stored mine for several months and all I do is make sure the gas tank is empty and burn all the fuel out of the carb lines and engine. Then I put a few drops of 2 cycle oil down the spark plug hole and pull the cord a couple of times.

As far as a servo does it take on large scale servo or 3 standard size servo. This is what I run in my 5b SS.
http://www.davesmotors.com/s.nl/c.88...t.A/id.2546/.f
If you ever order from DDM in the coupon section when checking out put HBF and you will get 5% off and free shipping on orders over $100. Not cheap but not $200,