I've pulled the LU off my ProV150LD to prep it for the shop service. It's been making a slight "chuckle" sound when hand rotated, and I'm hearing a buzzing type sound when I back off the throttle on runs. There was water in the oil. I've already got a water pump kit on hand, and I ordered a gearcase seal kit, figuring that they may be hard for the shop to get on short notice. (They aren't a Yamaha dealer).

I figured on having them check prop shaft runout, and make sure that the thrust washer is correct for the Tempest Plus that I'm running. Is there anything else I should offer them as direction? Also, the recommended LU lube is GL-4 spec - pretty rare stuff these days, so I've got the Yamalube on the way.