How do I start tree supports further from the model?..

[gadg3ts 0]

I'm having a bit of trouble getting the tree supports to do what I want.

At the moment, I can make them about 3-4mm from the model (support X/Y distance) as shown in the screenshot below.
However, on printing, there's a tiny bit of stringing between the right hand support tower that is affecting the right hand side of the model, which needs to not happen as I'm printing this for someone else (and they've proven a bit picky about surface finish).

So what I want to happen is for the tree support base to start further from the model to prevent this.
Then hopefully the support should look more like a 'droopy wizards hat' until it narrows and gets to the stubs at the top of the model.

Is such a thing possible?

I'm pretty sure I've done it before, but that was a while ago.

 

Thanks,

Sean

R65_large box hopefully seamless export.3mf