If you used only one camera, the results cannot be perfect due to small movement that is inevitable. It also seems to me that you took almost too many fotos in one line - this can be counterproductive. About turntables, there are already many helpful thread here in the forum. RC is no different than other programs - it just doesn’t have an internal masking tool.
Tom, I use it as Thread Opener, that’s what I usually see in other forums - OP is the post itself, not the person! 
Oh these young people with their funny internet talk! BTW I’m old enough to be able to say that… 