need to get rid of prop chatter and vibration.

[kayj]

solas amita 4 blade or solas rubix 3 balde

dear sirs:i have a 2009 Yamaha 40hp outboard.a Yamaha prop=11/58dia11pitch now.prop chatter in gear up to 800rpm.gps is 28 mpr.boat is 16ft lund pro angler.motor wot is 5700rpm now.would I need to drop pitch on the solas amita and stay the same on solas rubix as my prop I have on now.thankyou.iam a new guy here.ps my book has 5000/6000rpm ratings

 

[kayj]

2009 Yamaha outboard 40hp tiller.its a Yamaha prop.115/8x11pitch.it runs 5700rpm and goes28mph.boat is a 16ft lund aluminum hull. has a foil on it.need to get rid of prop chatter and some vibration.iam interested in solas props,my gear ratio is=2.00.would a solas amita 4blade 11pitch work orsolas rubex 11pitch.thanks for helping.