i never prep my tyres or rims & never have any problems with CA

i use a brand called "OK Bond" i think its japanese? could be wrong

we have 1 guy who brings it into the UK & EVERYBODY who knows about it buys it from him

without doubt THE BEST glue i've ever used on tyres, its thin so its easily spread around the rim & penetrates well, give a few seconds to move the tyre if not seated correctly & then once held on with either bands or even your hands for a minute or so its stuck, pretty well too, just check for any gaps which there shouldn't be if you applied enough & you're good to go

the bottle comes in a little silver coloured sachet & is definitely worth looking out for