I've reset all my vocab levels to 0 yesterday, so now I'm quizzing them all again.
The problem is that if I try to set the "Max new terms per day" setting to over 300, then I get an error, which indicates 300 is the limit.
The problem is that this slows down progress in this situation (given I know most of those vocabs), today I feel I could even introduce 800 "new" vocabs in my schedule if the 300 cap wasn't there, so my suggestion would be to remove tha 300 limit or replace it with a much higher one :)