Well I did not want to leave what I mentioned the other day without follow up to the source. I called Fine Sounds today and this was what I was told.
The bad units were a manufacturing mistake on the mechanism and the problem was compounded with rough handling during transit.
The factory has corrected the issue. They have faced/facing bottlenecks with the transport mechanism. They feel they will receive their long awaiting order soon and can resume production. Back orders are expected to be May and new orders would start shippinbg in July.
I'm a US manufacturer and understand logistic issues and appreciated the explanation.
After getting off the phone I felt confident they will make right on malfunctioning units and restore customer confidence.
I got in line for a backorder unit to ship out expectedly in May.