This is what it links to:
View attachment 146038
Not sure how they'd improve the OP's signal
Look at all this :
First slightly unscrew the bolt indicated by the blue arrow, then fully unscrews and removes the remaining 3 bolts entering the wall.
Then rotates the antenna to obtain such a result.
This way the Astra's 19°E LNB will point to the same place as the other Astra's 28°E LNB. This means that the Astra's 19°E LNB will not be tilted down like it is now.
The Astra's 28°E LNB should be moved to the left of its the central position.
The Astra's 19°E LNB should be moved to the left towards the current center position.
The elevation of the dish must be set for the satellite at 24°E before Astra's 28°E LNB was moved.
Both converters should be about +/- 5 degrees off center. The current twist of the horizontal holder must be returned to its original position.
When everything is perfectly set and the signal is as good as possible for both satellites, then he drills 3 new holes in the wall and tightens the bolts in them.
p.s.
Ne pas oublier de mettre les 3 chevilles dans les trous s.v.p.
Are you happy ?