ams511
Contributor
Your second stages should be no problem to service. The first stage is the problem. I hope you asked for a quote before the work is started. I like vintage gear but the problem with gear as old as yours is that the hoses could be dry rotted and your gauges bad. Once you start adding it up, it may be cheaper to purchase a more modern used regulator from eBay than trying to fix yours, especially at LDS prices.