try here
http://www.bbksoftware.com/
MyLaps aren't repairable should you happen to have on fail or the wire breaks were it enters the case.
You may want to consider the MRT PTX which works with the RC3 & 4 decoders.
http://www.team-mrt.com/ptx_form.pdf
MRT Thread
http://www.oople.com/forums/showthread.php?t=129702