You first seem to have loosened the three tilt screws so much that you had completely misrotated the secondary, and then tried to compensate with tilt (which works for axial collimation, but given you a funny looking slightly elliptical and skewed secondary.
You apparently fixed it. But if tightening the Allen screws now make your secondary's tilt go all over the place, you probably overtightened and created dimples in the secondary holder, which also tend to prevent setting the rotation completely optimally (but no worries, small errors there are completely irrelevant).
There has to be some system tension (the centre bolt pulls, the tilt screws push) but if there's too much it isn't healthy either. That's why once it's tight enough (i.e. the secondary stays put and it's impossible to rotate it by hand) you use balanced adjustments: if you tighten one screw, your next adjustment should be loosening another, etc. If you only tighten, you make dimples in the secondary holder. If you only loosen the tilt screws, the secondary will come loose and rotate around the centre bolt.
The last picture looks OK as far as setting primary tilt, but really, we need a picture where we see the inside edge of the focuser to see whether your secondary is well placed and well tilted. You can't see the third clip, which means that either the secondary is tilted too much towards the focuser or it's a bit too close to the front of the scope. We can only tell which if we see if the primary's centre mark is well centred under the focuser...and the last image is so blurry we can't even see the centre mark.
But for visual observation, give yourself some rest: as long as the primary's centre mark is concentric with the little black hole in the reflection of the collimation cap, remains so if you rack the focuser in and out, and if you can see the whole primary from the focal plane (i.e. with the cap, and the focuser set as when you're using the eyepices provided with the scope), enjoy the views and only obsess about collimation when you have better tools (i.e. a sight tube and Cheshire combination) or if you really want to tackle it once more (since even with a collimation cap you have all the visual cues you need, it's just a little harder).
Edited by sixela, 05 July 2020 - 07:32 AM.