+1 for Spa Cycles.
When the rim (MA40) wore out on the front wheel, I removed and sent the hub (Campagnolo Tipo) to Spa Cycles to be rebuilt with an Exal LX17 rim. A few months later, I removed the rear hub and again sent it to Spa for a matching LX17 rim. Many years later, both rims are still true and have never needed adjusting. I have completed many thousands of miles since that time, including multi day cycle camping.