Opinions on Electric Cutouts for small block

I ran a set of DMH electric cut outs for about two years.

http://www.dmhperformance.com/contactus.htm

Eventually the butterfly shaft started to rattle, the bush in the butterfly frame had become worn and the shaft rattled when the butterflies were closed.

Several emails to the company requesting assistance and asking of they could supply a spare bush - No reply.

Don't go near them .....really cruddy after sales service.