SOME ProTanks have trouble - but not even half, I don't think (informal survey says).
Some of those, the trouble was "no airflow" - cause the hole is in the threading and the threading of the ProVari is airtight...
If that happens, but you want to use the ProTank- just get a $5 aerotank base for it.
Either way though - I'd pop it on and give it a go!
Side note: personally, I pull ONE strand of wick out of a Protank - and find that way it keeps up with juice flow...