Has anyone replaced their Hurth HBW 50 transmission with a Twin Disc TMC 40? The Hurth in my 1989 C34 (Universal 25XP) is on its way out and I've learned they are no longer made and fairly difficult to find even a rebuilt one. Sound Marine Diesel out of Connecticut is recommending I replace the Hurth with the Twin Disc which, apparently, is a perfect fit to replace the Hurth 50. Does anyone have experience with this? and/or with Sound Marine Diesel? thanks!