High Pitch Harmonic on A String After Palm Mute...Help!

[Junk Yard Dog]

I have two guitars, exact same, Schecter PT, Duncan Custom pickups in the bridge, Schecter Super Rock iis in the neck. One is tuned to E and the other Eflat.

Just got the Eflat guitar back from a setup and I put it through the paces. I play it through a Splawn Pro Stock and a Randall RD1 at home. I'm getting this really annoying high pitch harmonic after palm muting. I've isolated it to the A string CAUSING it as not even the E string is causing I've tested many variations of palm mutes at the Bridge and even up closer to the bridge pickup where it gets worse.

-I already put the foam, scrunchy, etc. behind the not and that is not doing anything, which usually does something It doesn't help.
-I tightened EVERYTHING: pickup rings, string nuts, bridge, tuners, etc. Still does it.
-It's a Tele HH, no springs, so that's not it.
-I unstrung the string and restrung it, the A: no help. However, I did not put in a new string.
-I tapped every saddle on the bridge and all are 'dead' EXCEPT the A string saddle, which when I tap on it with the pick, I can hear that high pitch harmonic barley happening, so I'm leaning toward that maybe causing it somehow??
-I haven't checked the bridge pickup cavity, but it's got a solid Duncan in it. I did have the guitar in the trunk of my car for a few hours Saturday after picking it up. I DOUBT the wax melted enough to cause some of this issue, but I don't know. It wasn't that hot, maybe a high of 86 I read.
-I tuned it up to E standard, and it was still there!

This has never happened on any of my guitars before. Has this happened to anyone? If so, do you recall what caused it??

Thanks!

 

[Dave L]

There´s probably a tiny bit of wear on the saddle, just barely altering the vibration enough to bring out that harmonic. Try switching that saddle with one of the others and see what happens.

 

[Junk Yard Dog]

Took it to one of my tech's and he is THE Man. We plugged it in and looked at a few things with me and we found it it was happening at the string tree because there was not enough down pressure, so he'll move up the string tree to create that.

Foam would not have done it. I hope when i get it back, that solves the problem.

I'll report back as anyone who palm mutes and gets this should look at this fix. ...if it works!