Ok, I bought a 2004 Ranger 521vx with a '04 225 Evinrude HO back in April and it ain't ran very good since I got it. I have gone from a 27 tempest to a 25 fury and it still won't get over 5400 rpm on top end. I checked the plugs and they were filthy. I changed those and that thing will come to life now like no boat I have ever owned on hole shot. Only problem is now, at idle it misses pretty bad and misses a little while running. Plug wires are good and secure, so that is out. What do y'all think I got going on and will it hurt to run it until I can get it to the shop to get it looked at? Thanks in advance, Jason