A question, when using the X10 remote, do you receive the X10 signal on the EZSrve?
The EZSrve + Boosterlinc should give you more than sufficient signal strength – also, the unit should not be getting so hot to the point that it is difficult to touch (it can get warm though).
Try the X10 unit in a nearby (but not same) receptacle.
Do you have Insteon devices, and if so, can you communicate to them?
Please feel free to call us or email us directly (firstname.lastname@example.org) for faster response times if you would like.