Airsoft/Replica helmet custom liner

[IOnceWas]

Hello there,

Does anyone know any small company or brand that creates custom liners and padding for airsoft or replica helmets? 
I have recently acquired a replica helmet but it doesn't really fit my head and I don't wish to put my skills to the test and damage the product. 

Thanks!

[ButcherBill]

You buy helmet pads from amazon & fleabay