Hi,
With all due resepct, have you been trained in doing MWMs and the other techniques or just tried what others have shown you?
I ask this because I was on a one day course fortennis elbow run by Bill Vincenzino who has written a great masterclass article in Manual Therapy 2003 (?). So we were there with this author and clinician who explained and showed and taught us the techniques that thre were STILL people on the course who couldn't get the techniques right, even with an awesome tutor.
Persist. Also, I have put a protocol on this forum somewhere (?help physiobob?) search for it under lateral epicondylalgia (LE).
BTW - the most of the above techqniues work well fr chronic and acute LE - the logical conclusions are:
1. All your LE patients outliers (not likely)
2. They don't have LE (possibility)
3. You don't do the techniques right (also a posibility)
Whenever i come up stuck like you seem to have, i always start at point 3 and work my thru it...
Good luck!