Not engaging is a little weird, not sure where to start on that one besides making sure all connections were tight. Your PP may be out of calibration as well, and may be reading different speeds than what your factory gauge reads causing an issue with engaging at higher speeds than you think. As for surging, there's calibration that sometimes need to take place when more weight has been added, or a prop change was made, or sometimes it just gets out of wack and you need to adjust the values in PP to help with holding speed. When you have a separate PP gauge, there's instructions for this. Using your medallion system, I'm not really sure what to do. So glad I have the separate gauge and it's not built into a screen! Here's what I found from PP:
http://perfectpass.com/sites/all/the...upramanual.pdf
This is going to be the section that's relevant for the surging:
ADJUSTABLE PULL CHARACTERISTICS
KDW, NN – These background adjustable settings allow you to tailor the pull
characteristics of WakeboardPro. To access from normal wakeboard screen, highlight
“M” in upper right hand corner, then press UP Key. Wakeboard will now be highlighted
as show in Figure 2, press DOWN Key for settings and KDW will appear as shown.
Figure 3
KDW (Throttle Pull Rate) – KDW can be changed using up or down keys. The higher
the value, the more aggressive the control. Heavy boats may need higher values. Factory
setting is about 180. Normal range is 100 – 200.
NN (Paddle wheel Filter Factor) – NN is set at about 120. The higher the value the
more filtering is done. If you feel you boat is surging a little, raise value by 20 or 30.
(Normal range is 80 – 150).
CS (Control Setting) – There is an adjustable control setting (CS), which primarily
affects engagement. 2900 is normal, however, if you feel your boat “overshoots” the
target speed too much, you can lower the value a little. Adjustment of 50 at a time is
recommended. (Range is 2700 - 3000). (See Figure 4).
Hope that helps.
-Mike
2006 Supra Sunsport 20V