Simplest way to make a model bigger / easier to click?

[hexhound]

First off sorry if this is too basic, i tried searching but i'm not sure i had the right search terms.

i'm making a map in which I'm using the custom model "item spinner" provided by Horn:
Item spinner

The spinner is a really simple model that allows you to easily turn any model into an item. Super useful, i thought, and made 5 or 6 such items with mdl->mdx converter and notepad. So far so good. My problem is that the items produced by this method are very hard to click ingame, their "hitbox" is very small and close to the ground.

I tried doubling the numbers in this section of the .mdl file (not the blendtime):

Model "spinner" {
BlendTime 150,
MinimumExtent { -17.855499, -17.971901, 10.477800 },
MaximumExtent { 17.983900, 17.901699, 10.477800 },
BoundsRadius 18.081301,
}

The new model with double the numbers for all bounds loaded into the map fine but it didnt seem to have any effect on clickability or size. Experienced modelers, is there an easy fix to this problem or would i need to learn to edit models from the ground up? Is it doable with notepad?

Thanks in advance.

 

[Hermit]

Adding a simple collision shape should help.

 

[Lt_Hawkeye]

Did you change those numbers for every geoset?

 

[hexhound]

Did you change those numbers for every geoset?

Presumably not since i didnt know what a geoset was until i visited Hermit's link, thanks for the tip. ill poke around in the text file and see if i see some more.