I am thinking of going with the Yamaha frame sliders part number 1 MC-F11D0-V0-00. These sliders are shown in the Yamaha brochure in the accessories section for over $300. PartShark.com offers them for $257.59. /they really look good. Have any of you installed these sliders? If yes, how do you like them and do they interfere with any normal maintenance activity? Currently I have the Motivation sliders. Thanks for any input.