Question.
The TnT 600HD has 4, 2 sc2879 Transistors in it, and if I remember right the Galaxy 95t2 is a high power radio running 2, 2sc2290 in the output section.
How much dead key and peak swing are you driving the amp with?
What kind of numbers are you seeing from the Amp?
And what kind of meter are you using to read power?
1.5:1 is not bad for most radio set-ups unless you are running high voltage, or pushing the transistors in the Amp hard.
X-force/maganaforce/TnT builders push users to keep reflected power as low as possible because often they know that to get the peak numbers that they advertise from there amps things are running at stressed levels.
Did they tell you what happened to the Amp?
I will say that they more often than not will fix the amp the first time ( at least that is what I have found in the past) they might or might not warranty the Transistors.
As you have described it, your antenna system is a good set-up, in fact better than the average 1/4 wave set-up in that you understand what is going on at the antenna.
73
Jeff
