I would also but I had to replace everything as the PO did not do any maint. on trailer.
I replaced everything except the hard lines, just flushed them. Along with installing a electric/hydraulic brake actuator.
etrailer was very helpful with the purchase and advise.
It was the best thing I could have done as far as brakes.
1995 Maxum 2400 SCR 5.7 A1 G2 LUNA DE MIEL
1988 Bayliner 2455 5.0 IO (sold)
1987 Seaswerl 18ft C. Cabin 4.3 IO(lost in fire)
1976 16ft. Tahiti 2.5 IO (sold)