I have over 5,000 hours in the G44 Grumman Widgeons & G21 Grumman Goose, flying in Alaska, North Slope & for Chalks in Miami, then Everglades Nation Park till 1986, when I retired. Make sure you check the elevator cable on the back side of the pully, where you can't see it, every 100 hour inspections & put a good rust proof, elevator cable, of course there's none that are really corrosion proof in salt water, we had one break on takeoff out at Ft.Jefferson Nation Park, back in the 1970's, it sank right up to the throttles, we had it rebuilt completely & had Lycoming's put on it @ 300hp geared, the plane wld get off loaded in a tad over 15 seconds. I flew it till it was retired in 85, and the Navy came & hauled it away & had it redone original & its now hanging in the Navy Museum in Pensacola. It was originally a Navy search/rescue airplane, w/ Ranger engines, during WWII.
C/N 1388, BuNo 37758, delivered to the US Navy on Nov. 22, 1944. This was the prototype used in the Mansdorf program, it originally had 220hp Continental engines and very long nacelles that extended well past the training edge of the wing, neither of which worked out and were removed. If you would like more information feel free to contact me.