Perkins said: “We’ll have to reshuffle the team around a bit, but the nucleus stays the same.”
Christiaan Roets could return for the Crusaders, but coach Clive Griffiths is not short of options. He said: “Christiaan’s a full Welsh international but he’s still got to force his way back into the team.”
Griffiths added: “Hemel have done fantastically this year and they’ll be well-prepared.
“They’ve a very narrow, short pitch, so it’s hard to find gaps. It’ll be up to the bigger guys to punch holes and we’ve also got to pick good lines to run.”