Yamaha MAR-GYT4B-V6-20 prop How would I find the gearcase size for this prop?. I need to know if it fills the full sized 4 3/4 gearcases or if it leaves a gap like the mercury Trophy models. I cannot find any info about it other than spline size and dia. I know it will physically fit just like the Trophy but if it is the smaller size, it has too much venting. It is a Yamaha 4 blade SS model number MAR-GYT4B-V6-20..thanks for the help |