Mashed in, prep and record keeping.
When reassembling, it does not hurt to lightly lubricate the o rings. I use vaseline, others use 'keg lube' which I suspect is vaseline. Not necessary, but helps sealing, extends their life, and prevents pinching.I bought a 7/8 box end wrench and disassembled my Corny keg. Even though the keg is used, it has new o-rings and gaskets, and is shiny and clean inside.
In the meantime, I am monitoring the fermentation of Red Wheat for Winter, which has been chugging along, bubbling the airlock for the past few days. This brew will be the first of mine to go in the keg.
My recently bottled Smooth Stout is coming along, if the PET bottle that I filled is any indication. I might give this a try on the upcoming weekend.