Plugin make a sum from all weight

Hi, i am using plugin a long time , it is very nice and simple for use ,

now i have case to calculate shipping with weight,

i see that plugin only make sum from all weights and show errors from that

for example if i have 3 products in cart and they are more then 30kgs and in meanwhile max weight rule is 30kgs , shipping can not be calculated is there any chances only to take higher weight from products in cart?

tanks in advance