I have that same combo in my F104 car. I love my 4PL and have had zero issues with it. I haven't noticed any glitching in any of my cars/truck so far (since adding caps to my SCTs). I am using both Novaks and Tekins, Saxon, Hitec, JR and Futaba servos.

Just this week when testing the F104 car (Tekin RS/Saxon), I noticed a couple of times what seemed to be a glitch. I even made comments to a couple of buddys. Its hard to say really since I was playing with tires and diff settings, but it sure seemed like a small glitch. I haven't put a cap in this car yet since I need to buy a splitter (the receiver is full with a LED light harness and transponder).

I'll be testing the car again this Tuesday with a cap and if I again notice anything, I'll report back.