I've been through a lot trying to figure out why I can't get my 96' johnson 200 venom over 52 mph at 5800 rpms. Been a little nervous to do a compression check but really didn't expect the low readings I got today. Warmed her up first and here are the readings..72,70,62 lb....75,80,75 rb. It seems really happy and smooth around 5800 rpms but does take a bit to get started. Can these readings be the reason I can't get decent top speed? Model is J200stledm and currently running Raker HO 14 1/2 x 23P. Any thoughts?