The rifle in that link article is an 1894. Is that problem specific to 1894's or all Marlins? I have a 336 that has seen three generations of use and I've NEVER had a jam with mine.
I have a friend that owns two 1894's and I guess he just hasn't put enough rounds through them for this problem to show up.
Blessed be the Lord my strength which teacheth my hands to war, and my fingers to fight -Psalm 144:1, KJV, a Psalm of David