If you do a search for “hydraulic roller lifter noise”, or problems you will find there is no shortage of people experiencing less than optimal results.
No lifter brand seems exempt from this....... and certainly not Morel.
That’s a good catch.
If Hughes won’t take care of it, maybe sending the pics to Morel might get you somewhere.
So do you have a contact email or something for Morel, because they say they won't deal with the general public or individual engine builders, they want you to go through one of their dealers.
This really should be the 3rd strike, poorly machined lifter, replacements not any better and no way to contact them. Not exactly what I'd call great customer service or product.