Please help, I have 2 125 hp force motors and when i engage them both by the time I get to half throttle one engine starts for lack of better term bucks up every few minutes. If I bring the other engine up to a higher throttle it stops, this worked for awhile but now when I put the engines up past 3000 rpm they both start kicking up. Could the lower legs be slipping and this is causing the problem?? Any suggetions would be appreciated