I recently purchased a brand new Nitro Z21 with a Mercury 250 Pro XS but I'm unable to go over 4900rpms with a top speed of 55mph. I completed the break in process just like it said and now have about 20 hours on the motor but it's clearly not performing like it should. We have a 24p fury and have also tried a 26 tempest plus with the same problem, it won't go over 4900 rpms. Very frustrating considering it's brand new and should be reaching 6000 rpms and top speeds of 70+. Does anybody have any ideas?
Any help or suggestions are greatly appreciated