as far as voiding the warranty - aside from the cabinet, anything you need to replace on the bradley is not really that expensive. The smoke generator maybe but you aren't doing any mods to that. Besides, most people that have problems usually have them at the start, either loose wires, defective parts, etc that are damaged in shipping, etc. So do you initial smoke and make sure all works and you should be fine. To me the benefits were well worth the minor risk of problems.