Doing a total refit on boat seats, seat mounts, carpet and so forth , already bought seats and stands, I got to wonder if since the front riser for seat uses a different base (Springfield Taper Lock) if I should use the same base throughout the boat on the other seat mounts They areSpringfield plug in posts. I put in the good seats, chair style (two seat mounts)at the steering and one mount in behind in bottom of boat and then one mount at front of transom deck area so I can move the rear seat high and low. My next question would be if the front riser for the cushion is even available with the telescope plug in base? I also replaced the floor in boat with 3/4 exteerior, as I couldn't find marine grade. I have the floor in and wonder if I should coat it with a preservative or sealer. If I keep finding things to do here I will never get boat in water This is my first post on this site and a new user. I'm looking forward to getting this in the water soon.