Unfortunately I have no experience with that brand, so cannot help from that perspective, but I suggest you need to provide a bit more information of you want to get peoples ideas.
Are you based in Australia, if not then the gas train etc could be totally different to over here?
How much green are you dropping in?
What temp are you measuring (Bean or Airflow), and where is it being measured?
I assume it's gas?
Those with 5kg & larger roasters would be more helpful than me, but 130C, if that is the bean temp, sounds very low as a starting point, and very very low if that is the airflow temp.