RE: Evolution 46 problem (general question)
Tycho,
I wrote the free play your engine has seems excessive.
If your engine does suffer from what Chuck described above, use your warranty and have it replaced/repaired.
Make them cover the shipping too.
That is what the warranty is for.
Next time, break it in as described in [link=http://www.rcuniverse.com/forum/Tapered%2DBore_Engine_Break%2Din_%2D_Upgraded/m_1850473/tm.htm]this thread[/link].