I am wondering if I should have my dampener rebuilt or replaced on my 56 Mercury Montclair 312. Anyone have an opinion of whether to rebuild or get a new manufactured one? I have already contacted the Damper Dudes, they said they can rebuild mine, they did not have one on the shelf so rebuild is my only option from them. I see "new" ones, made in Mexico, but I am wondering if keeping mine would be the better option. Mine shows no sign of slipping, no wobbling, but it is a 1956 and I have no way of knowing if it has ever been rebuilt. Should I leave it alone or is it worth the time/money to address it now? If the original ones are barely adequate, should I replace it with a better one?  The car is not driving daily, it is just a weekend driver for a few months a year due to our beautiful Minnesota winters.
All info is appreciated.