I have one. Only had two problems, both easily fixed:
1 - Jammed shut. Fixed with some washers and a screw.
2 - Radio remote controller shat itself. Fixed with a DPDT rocker switch from jaycar that fits nicely in the center console near the handbrake.
Its the best thing I ever did. Very quiet when needed, loud when I want some extra "go".
Happy to show you what I did to rewire and take the old controller out and how I fitted the washers to fix the jamming problem.
