What did they think was incorrect or left out of the ordination ceremony?
Lots!! Fr Peter Scott has written a lengthy article on whether ‘conciliar priests’ who come to traditional should be conditionally ordained. And this train of thought began way back then, with Archbishop Lefebvre, who he quotes liberally in his document.
“There can be no doubt that Archbishop Lefebvre
entertained serious doubts as to the intention of some
conciliar bishops when they ordain priests. In Open
Letter to Confused Catholics (p.50), he points out that the
doubt that overhangs the other sacraments also applies
to the ordination of priests and gives examples, asking
the question: “Are they true priests at all? Put it another
way, are their ordinations valid?” He goes on to explain
the reason why he considers that a doubt exists over
the ordaining bishop’s intention, for it is frequently
no longer the intention of ordaining a priest to offer
sacrifice:”
I can only repeat, that it was a familiar theme to us when there and for the most part, we never doubted or questioned

Now, you may say, quite rightly, “how is it that laypeople in the SSPX do not question what is proposed to them” - because it was not just me or the odd individual - it is ***everyone ***(almost without exception)
Looking at it head on, and trying to apply some sort of logic here, can it be said that all laypeople in the Church right now or even all laypeople in one particular parish right now, all think and believe in the same way? Something odd about this, it’s almost a phenomena

that worldwide, over a 40 year timespan, that nothing varies more than a degree or two? My experiences of 15 years ago, are still being experienced now several continents away. (now don’t all cringe and break out in hives, at my use of the word
experiences, I use it here in it’s true sense

)
What about the New Mass did they say was “evil” or bad?
Everything !!
Is the
Novus Ordo Mass invalid, or sacrilegious, and should I assist at it when I have no alternative?
"However, even if we could be certain of the validity of the
Novus Ordo Masses celebrated in today’s Conciliar churches, it does not follow that they are pleasing to God.
Much to the contrary, they are objectively sacrilegious, even if those who assist at them are not aware of it."
“However, regardless of the gravity of the sacrilege, the New Mass still remains a sacrilege, and it is still in itself sinful. Furthermore, it is never permitted to knowingly and willingly participate in
an evil or sinful thing,…”
"Consequently, it is not permissible for a traditional Catholic, who understands that the New Mass is insulting to Our Divine Savior, to assist at the New Mass…**even if it is the only Mass available. [Answered by Fr. Peter R. Scott](my bold)**
…how is it that almost everyone there accepts and obeys this…?