I have a 1987 Catalina 30 with a Universal 25XP diesel and a Hurth Transmission. The other day when sailing I noticed a ticking sound coming from the transmission. At that time gears were in nuetral. If swithched forward sound was still there but dissapeared when switched to reverse. I also noticed that there was not the usual "clunk" when switching gears. Have not had a chance to check the oil but will do that in the next few days. In the meantime would appreciate if anyone has encountered a similar problem and possible solution. Thanks.........Bob.