no problem m8 i think its in the string sample you used what i would do is just that part out of the sample by clicking the green bar and Adjusting the two ears to only play the part of the sample that does not clash with the main melody :)
Not bad but parts of of an audio track are Off key too the original melody and it takes away from the flow IMO the beat is the best part i see you made that your self :) nice one