I'd imagine you would have to talk to someone that has dealt with their support. I have a few Howas but never needed to use their support.
I have never needed to either. But I have never sent lapping compound down the bore before shooting a rifle in stock condition to get a baseline. If a rifle shoots good out of the box I will leave it alone. At least I will only change one variable at a time to see if something I do makes an improvement. Bedding a rifle is not a panacea.