Tony: It seems folks are beginning to clean and lubricate the C50 gear boxes after 60 or so flights. Can you recommend a lubricant? Also, do you still feel shock mounting the engine is necessary? My C50 12XL is not shock mounted and except for the very slight "whine" from the gear box, I can barely hear it in the air. In fact, I wouldn't want it any quieter as the sound of the gear box provides feedback regarding the power setting. There is also no vibration in the airframe. I seems like a lot of extra work (i.e., shock mounting) although I have built exactly the same mount for my Symphony as you did for the Partner. Just wondered if you will continue using the rubber grommets in your mount. Thanks.

Mike Moritko