We know there are new rules regarding this for '27 season. New Rising stars have to be u21 and average limit has reduced. This was said about by Phil Morris in speedway star a few weeks ago naming cairns in particular as no longer eligible and receiving the 25% graduation reduction instead 

Shame because at premiership level they're both out of there depth 

Thought it was below 4.00 for a RS

And where does that leave stand alone clubs like Buxton?

Cairns average of 3.5 is to high to be a rising star. Thats why he aint a rising star

Buster and Rob have said on several occasions that they are only interested in top flight racing nowadays.