I think what you read was correct. On our 37' boat, within a few days of sailing after the installation of the furlier, using the winch was the only way to furl the jib. Our problem was wrapping the halyard which was caused by an inappropriate angle of the halyard to the forestay. We figured that out by one for us furling at the dock and the other warching what was happening via binoculars.
The solution was a "restainer" that has completely corrected the angle and the problem. If you have the furler installation manual, this might be explained. If not, you can probably find one on the web. In any case, the Harken manual, which is available on-line explains the situation quite well, and I'm guessing that if this is the problem, the solution is generic.