Accounting for Errors using PTdSF Contact Force

Hi Everyone,

I am running a simulation at the moment that involves a conveyor belt and am using PTdSF Force Contacts to define the contacts between the belt (which is a flexbody) and the idlers that the belt runs over. Since these idlers are cylinders I need to use several PTdSF contacts to simulate the cylinders of the idler contacting the belt (as they can only be defined as sphere from my understanding). 

I was wondering if there is any way to get around the errors associated with the PTdSF contacts going outside the defined range of the deformable surface? In order to make the simulation realistic I need to the entire idler to have contacts defined and during the simulation it is guaranteed that these will not always be within the range of the deformable surface.

I'm happy to share files/images if it helps but I just need to figure out a way to get around this error.

Thanks in advance!