I played an older version of that Premier model in the late 60s, back in high school. I owned a Deagan Aurora for a time. It weighed a ton and was not much fun to transport, because of its massive cases. It had a wonderful sound, but I never got to play one gig on it, just calls for drumming. I'd love to find a Deagan Commander and a Premier 600 marimba, someday. There was also a silver version of the Aurora, with the Slingerland badge, shown in their '76 catalog. They called it the Granada. I'd love to own one. I don't know if any were even made, besides the one pictured.DUUUUUDE. I've gone through the same exact thing. We're talking the tubular frame Premier with long pedal and two springs, right?
The parts are gone, my friend, and if you ever find some, let me know. I found a guy in Australia with a small stockpile of parts, who warned me off of buying them because of the freight charge. Told me to contact Premier, which I did multiple times and even talked to a rep friend from college in person at an expo. They have zero parts. Anything that exists is in the wild. So I went back to the Australian... and somebody else cleaned him out except for a few parts I didn't need.
So, I use these vibes regularly in my lesson studio, and occasionally to premiere (see what I did there?) one of my artsy fartsy tunes or those of others, so I had to make parts. Drum brake springs, tubing and zip ties for posts, hardware store pedal hinges, a shortened salvaged Adams gel damper...
Where modern wide bar instruments sound full and earthy, these sound gorgeous and silvery, if willowy in the lowest half octave. I can get harmonics out of these that I can't get out of "better" vibes.