By the sounds of what your going through you shouldn't even be touching tren. Stick with the basics is my advice.
I would not do 50mg tren ed because i don't use tren. I do prefer long esters so i can pin 1-2 times pw. I don't like needles and this is why. Above i said 50mg tren eod because 75mg eod didn't agree with you.
If your glutes are getting sore, you can try side quads along the outer sweep. This is where i used to do all my shots, you can unload large amounts of oil in the quads, its a massive muscle.
Is it worth looking into Tren E instead to reduce pinning or still better to stick with Deca if I am having good results?