Thanks fellas,my learning curve is steep,i'll try a #8 plug latter as we are comming into summer here shortly.I will stick to the apc prop 10.5x6 that came with the kit for now,but i have an 11x6 to try out. I realize there are pro's and con's with everything bit if we dont ask these questions we cant make a somewhat informed decision,it is a big help to get so much info from such a diverse range of fliers around the globe,coudn't have done this 20 years ago without a stamp."If you dont ask you dont learn if you dont learn you fail"