Made the maiden voyage in the new to me 2008 200 XL. As recommended on here I went with the 10" Atlas jackplate. 26 Tempest Plus. I played with the motor height in about 1/2-1" increments from whole way down to as high as it would go without blowing out. No matter what it wants to chine walk bad at about 65-66mph. 10 gallons of gas and just me no fishing gear. It had a lot more in it I had to back off. The previous owner's friend told me today they had it up into the upper 70's and it never chine walked. Any suggestions? Looks like this thing liked no jackplate.