I'm not running the LE,but the Alpha motor shoud fit.(see the link I posted) The LE has open frame sides & the Alpha can is tapered on the mount side To clear the narrow part of the frame side. That is the recommened motor for that heli. The motor I'm running will probably have the same issue as yours, But unless they & other sites are miss-leading the Alpha should fit.

I almost got the LE ( I really like that canopy!!)But I wanted to stick clsoer to the original TREX V2 design.

Good luck, Ron