I strongly suspect that those 2 long screws intruding in the light path will have a noticeable effect on the image in terms of producing diffraction pattern artefacts.
I can easily see such artefacts when I am collimating my ‘scope and I use a small Allen key to adjust the secondary. The diffraction pattern from the Allen key is clearly visible on my computer screen with a CCD camera in the eyepiece holder.
(The Allen key is of course attached to a small length of nylon fishing line so I don’t drop it onto the mirror).
Cheers
Dennis