We had essentially the same Hood furler on our 40.5. Even with a snatch block facilitating alignment, the unit never furled smoothly. Furthermore, the location below decks made maintenance very difficult and the overall poor design made even simple maintenance tasks, such as changing out the furling line, extremely difficult. The unit eventually began to disintegrate and had to be replaced.
The disintegrating Hood furling system was replaced in its entirety (including extrusions) with a Profurl titanium. We also had our local fabricator make dual mounting stanchions to bring the entire unit above deck. These stanchions were a much stronger mount than the original single plate, moving the drum above decks made for very easy and fast inspection and maintenance, and the forestay adjuster was made readily accessible, rather than being hidden inside the furler housing.
The superior design, workmanship and materials of the Profurl allows for much faster and trouble-free sail changes, furling is now a one-handed operation, and operations such as changing the furling line are simple and efficient.