If you have the BUD peaked out properly, and you know you have it on the Satellite as best you can, the fine-tuning is done with the receiver and skew.
It isn't easy to peak a big dish because of the mass involved.
Perfectly plumb mast, proper elevation/declination, and East/West movement of the whole assembly on your TS Satellite. LNB's lined up at the right place in relation to the dish. Feedhorn perfectly in center of dish. Focal point at proper distance to mouth of Feedhorn, and F/D ratio set properly will illuminate the dish and give you the best signal.
From there on, it is a matter of setting the skew and whatever fine tuning adjustments your receiver provides.
If you are slaving the analog receiver off of a DVB receiver, the DVB receiver controls the skew and polarity for the analog, so that might be off a little. Make sure everything else is set properly, and you will be happy with the picture.