Hello all together now, here is the next update.
In addition to this modification of the SRB holes, is yet another important thing I must consider now but for a suitable positioning of 1:144 stack, which I recently soon had touched on: the location and size of the TSM's.
My guess was that the 1:160 TSM's of the paper kit would not fit so good from size or visually to the 1:144 stack. This concerns both the TSM height and thus the transition at the intersection of the TSM Umbilical Plate (i.e., the "plug") to the Ground umbilical attach point of the Orbiter (with the matching "socket") as the position or the distance of the TSM's of the orbiter wings.
Therefore I've provisorily put together the orbiter and taped on her back of the ET-SRB combi pack in order to perform a more accurate fitting test with the complete stack for better checkup of the location conditions.

Because if necessary would have to Yes in the SSME hole and his Blast shield possibly even minor adjustments are made, what I want to avoid as possible.
And so the temporary stack looks now:


And so much to the proportions of the stack and the TSM's, that look already rather small compared to the stack, I find, isn't it? The size of the stack in comparison to the MLP appears rather too powerful by the vertical perspective. Regardless the difference in the scale of 1:144/1:160 already cannot be overlooked, but which is now a compromise solution.


And thus to the intersection of the Orbiter "socket" (red border) and the TSM "plug" (green lines) of the Umbilical attach point that now really are not at the same height level.

And the red arrow is intended to alert already on another important reference line for the TSM's height, is clearer in the next picture.
Source: NASAAs you can see, the top of the TSM is located on a contour with the wing marking in the preceding image (red arrow), and the umbilical interface between orbiter and TSM runs approximately horizontal. As a result the 1:160 TSM's are too low for the stack to my liking, because the stack is also still at about 1.5 mm higher by the missing SRB shields blast. What do you think about?
Therefore, I have put a 1:144 TSM (H=65 mm) from the Revell Kit compared to the left, and as you can see, whose upper edge ranges about to the marked reference line, which is even better to see in the next picture.

If I wanted to use the 1:160 TSM (H=57 mm), I would have to increase his height to approx. 8 mm what but visually likely should retire because of the printed details (door, pipes, etc.), isn't it?


As you can see in this picture, the TSM stands also slightly too close to the orbiter wing and would have to move a little bit further forward, what must be taken into account to the SSME Blast shield.


And so now the stack looks from the back, and as you can see, the SRB's fit now much better over the modified exhaust holes and have sufficient amount of space.


Now, I am however looking forward to your impressions and opinions.
P.S.: And here is a small addition about the TSM's for all Space shuttle technology freaks, a fantastic NASA HD video
"Ascent - Commemorating Shuttle"with phenomenal slow motion video sequences, by the way my favorite Shuttle video!!!
Among other things, you can see the full launch process and as of
9:34 the amazing function of the TSM umbilical mechanism in action, taken from inside of a TSM and much more interesting pics ... enjoy it!!!
The following image shows principle drawings of the swivel operation of this brilliant device:
Source: NASAThe TSM umbilical plates attached to the Shuttle right next to both OMS pods and when the stack rocks back and the SRB's ignite, the umbilical plates disappear into the TSM in the blink of an eye.
