[WTB] Antminer S9 (or 2\1 blade working) prefer early batches

[mammon]

I am looking for a S9, 2 or 1 blades only working is also fine.
I have a defect S9 blade and repair is expensive, also to extend the lifetime of my S9's I decide to build S9(LN).
A 2 blade S9 instead of 3 (because I think that is a  problem of these things...)

Prefer early batches, don't know if B16 blade and B2 blade work well together?