The saithe fillets seem to be more sensitive for this kind of treatment (injection and freezing) than cod fillets, but gaping is well known problem for saithe fillets.
Ufsaflökin virðast vera mun viðkvæmari fyrir innsprautun og frystingu heldur en þorskflök, en los er þekkt vandamál hjá flökum úr ufsa.