The kit comes with the 2 pieces of silicone tubing. Has anyone found that using the lower one (smaller diameter & joined) that the shaft doesn't seat properly/deep enough? Doing dry runs with green beans I found that if using the lower silicone ring the shaft jumps lifting the perforated pot with it. Without that lower silicone ring I don't have that issue but do find that perforated pot turns with the agitator arm.
Try pushing the perforated pot down to seat it The lower tube can be replaced with a fine layer of high temp silicone gel/paste (from the tube) where the two pots join Its purpose is to seal in the heat or to put it another way not let heat escape
Hopefully my Turbo Oven will arrive by courier tomorrow so I can start roasting on the weekend. Another question, would the weight of the TO be enough to hold down the perforated drum and shaft and hence stop it "jumping"?
This is very possible However there are a few easy tweaks to fix anything as all the parts need to marry up & once done its permanent, I am only a PM or call away KK