I’ve been playing my 2009 Epiphone G400 for a little over 2 years. I had the set up looked ar for the first time about a year ago, by a local tech who came recommended. When I collected I was told the action was fine, but the intonation needed adjusting. My question (as the title alludes to) is the set up something that needs looking at periodically? If so how often should I look to having it done?