Ahh, yes I remember!
It looks like you are doing well in your new home. I am so glad.
The concentrators are just sitting in the garage until my studio is finished. I have three all needing to be refurbished. We have a OGSI 15 and it will be about 200.00to replace the sieve beds but it is the one I hope to use. The others will become emergency back ups.
Take care