Kaha,
Thanks for posting a pic. I don't see the same problem. That model is a sim.cfg model . You did not mention it but I will assume for a second the you are running ultra water. Are you using any addons that affect the water like Accu-feel? Also, can you check that same VEH_water_tanker01_sm model wake to see if it looks the same with the water set to high instead of ultra?
On the AI plane striped wakes that you mention....do you have The Western Chugach Part 2 RTMM Scenery installed? I know those models and effects the best. I would like to see if you see the same striped wakes with the AI Float planes that takes off (using Spring on season switcher) from JLA dock at 1800 UTC.
rgerdes,
FYI, I wouldn't recommend using MCX to convert RTMM/TFX models to P3Dv4.4 code since RTMM is standardized on FSX coded models which have been proven to work correctly with the effects in all FSX and P3D versions. Since the entire offering of RTMM is based on using FSX coded models, mixing in models that are coded for P3Dv4.4 could ultimately cause unpredictable results while using RTMM Scenery.
Rod
Rod