I tied down at LWS for a few years, and Gustin Aviation performed my annuals, a few repairs, etc. No complaints, in fact my experiences were always good. However, I was already on the field, and I was willing to let them work on my plane when it fit their schedule. Old man (Ron?) Gustin is now mostly retired, and his son Steve has taken over. I haven't seen any negatives due to that transition.
If you choose to have them do the work, make sure you schedule around their busy times. I remember that crop dusters from WA, OR, ID, and MT would all come in there to have their planes fixed up, and in the late winter through the early spring there might be a dozen or more of them lined up outside waiting to get into their hangar in preparation for the upcoming season. If a crop duster smacked a fence or a powerline and came in for repairs, they would drop anything else to get him back in service ASAP. Don't make time demands that will interfere with their bread and butter, and I would expect a good outcome.