I posted a question a few months ago about a prop for my 2015 tracker 190tx with a 115 mercury proxs 2 stroke,. So I ended up buying a solas titan h4,13.25x 19 4 blade,and immediately I noticed a little bit of pulling to the right and minor vibration,fast foward to last week I took off the stock steering helm and installed a tilt helm on my rotary steering because the steering wheel was so close I hit my knuckles on the gauges,now I have severe vibration and when getting on plane the boat pulls to the right so bad I am white knuckling to keep the boat straight,yesturday I decided to put the stock 3 blade aluminum prop 13x21p back on and I got no vibration and very little pull,but I did lose 7 mph ,with the 4 blade ss I was running wot 5300rpm at 52mph full tourn load and 3/4 fuel. Even myself (250 lb) and a partner 275) I was running 49 to 50,and with alum I got 43 top end,I have not hit anything with the ss 4 blade ,can I get some ideas what is causing the vibration an pulling out of nowhere????