In most cases, no feed problems are a case of feed rollers worn out. On later HP printers the rollers are part of the maintenance kit the printer display tells you to replace every so many copies. I've never used anything but HP parts on our printers, but that doesn't mean the others are not any good.
If you take your time, it shouldn't be an impossible job to do, just remember the parts for the most part are plastic, so don't force them.