...the best thing to do is disassemble it an clean it thoroughly. Most autoloaders are not that hard to take down and put back together, if you are attentive to details when you disassemble it. The manual should help in that regard. If you spray carb or brake cleaner into the action in an attempt to clean out the crud, you will probably just rearrange the crud into EVERY small crevice in the action, and you will very likely get the cleaner on your stock. This is a very bad thing, if your stock is wood, as it will eat the finish off. Get to know your gun...disassemble it and clean it completely.

"Progress, far from consisting in change, depends on retentiveness..those who cannot remember the past are condemned to repeat it." Santayana