Nice "mod" lol with the OLED mount... I wish I could buy the OLED separate in EU like you can in US... would totes do the same and use it etc. but thats aint happening sadly :/.
GTX, if you mean this bykski KP block, I wouldn't say its out of spec since everyone that got this block has to dremel a place for the mini DP ports (if you don't want PCB flex) so its probably just bad design lol but seems to work much better than original WB for people that use it + its "easily" available for a pretty cheap price with the downside of having to mod it a bit.
I had to do it, a guy who got it as one of the first has the same issue, same for a guy that put a review on aliexpress had to do it, sparetime here and a couple of others. Thats why I think its not out of spec but just not the best design and they overlooked that part.