HGS effects are almost exclusively built to order; circuit, options, and graphics. As far as warranty is concerned, as long as it is not a prototype and it is not physical damage I will repair it at no charge. Basically as long as you don't crush the case, you're covered.
Most of the effects I build are recreations of vintage effects, because not everyone has the money or opportunity to buy an original.
If you see something you think I might be interested in, or have an idea for something
let me know.