I have a 2001 SCX210 with a225 merc.When i test drove it at Lake Amistad it ran about 65 mph at 5500rpm. I live in NM and the lake we normally fish at is at 4000ft elevation.have had the boat tuned and it runs great but we can only get between 4400 and 4600 rpm now.I have read some propping posts and think we need to go down on our prop pitch. We now have a Merc 4-blade 25 pitch in good shape.When we run the boat shoots a big rooster tail....wonder if we need to go down a notch on the jack plate? Also,Im not sure how to measure the pad to prop distance...any help would be much appreciated.