Bought my DK4510MB new in May 2021.
Currently has ~250 hours on it.
Regens about every 35 hours.
Absolutely no issues.
It replaced my 27 year old MF-1250.
Welcome, John. There is a thread here on TBN discussing the status linked below. Too bad, great shield. Seems they were a good company but bad things happen.
[Status of Everything Attachments