I used 306’s on bottom feeders long ago. I'd lightly suck on it while I squonked and would stop when I felt resistance. Moved to rba's when they showed up and then Reo's when rba's were made to fit them. The disposable attys don't compare to them. Rob will turn down a RM2 to fit your Mini. It's a bigger step up than going from a cigalike to Provari.