Smaller front stops for laptop cooler/stand/fans

I bought a stand with built in fans to cool the bottom of my laptop and was amazed to find this cheap (£8)but reasonably well designed (for china) model had huge towering end stops to stop the laptop sliding forward. So large that they stick out way above the laptop and cut your wrists. Using my macbook pro makes me suicidal enough already without giving me the tools to finish the job, so I printed off some smaller feet designed not to stick over the top.
They are large enough to probably hold