The best! I have a IS max 2 modular that the chin bar stopped detenting in the up position. I did some searching online for a mention of this with no luck, so I shot them an email. Right away they came back with "should be an easy fix. We'll send you the parts no charge"
Couple days later I got new hinge plates in the mail and it took care of the problem. That's how to get a repeat customer.