Try the marlin section under rimfirecentral.com. Someone over there can probably trouble shoot what's wrong with the cartridge carrier. I had problems with mine and someone over there had the answer for me. Works like a charm now.
I know what's wrong with it. Tips broke off.
It's going to take a replacement, OR my metal working skills are going to need a big bump.
Thanks for the link, Joe. I saw the ebay prices, and for what they go for, he could pick up a used rifle in decent condition. But he hand painted the stock/scope etc, and its his favorite.
We've all been there.