I have rarely used a regulator--once in WY when they gave me one when I checked in; once when I was told it was 120psi. Other than that, haven't had a leak since bought used in '07. Any of these units can have a bad water connection, and maybe the best time to find out is soon after purchase; traveling can also cause a leak.
I feel that 60psi is ok to use without a regulator.
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired