Hi all

Need some help with my 289.
In 2013 it got a total overhaul with windsor cam that has a 351 firing order and Chevrolet valves by previous owner...

From 2013 to autumn 2018 there was no problems alt all.
In 2018 it broke a valve, I it got replaced with a new one. In autumn 2019 it broke yet another one, we replaced them all.
In April this year yet another broke and we figured out that the geometry was of.
So the pushrods and rollers was switched out for longer and the geometry dead...

Broken valves. Again and again... Help!