yeah it helps a ton. It makes the servo saver a lot stiffer. that overpriced spring you posted fomr ebay will do the exact same thing as wraping a coil form a shock spring around the servo saver.

For servos most go with the Hited HS56hb, the airtronics 94091Z, or the HS81MG (<-- has to be permenantly glued to the chassis thouhg)

The Airtronics servo has a good servo saver available for it. I've also been hearing this servo saver has been working well for people and its specificallt made for the RC18..

http://www.egrracing.com/mart/produc...roducts_id=527