Topic "Wave..." a message from Mdblb05

I am a flooring installer/finisher. Learned installation from 2nd generation father inlaw sanding I've had to figure out on my own past the basics. I have gone to I nwfa schools as well as some others. For the first few years I had no wave or didn't notice it. As I've gotten better and more particular it seems to be around more and more. Thought it was the machine (newer 10" bona belt) so I had it serviced twice with same results. Bought a brand new Clarke floor crafter same results. Have a guy help me sometimes with 20 yrs experience and he has same issue withy machine or his though it seems to a lesser extent sometimes. I don't have wave on every floor but to some degree on most. It is by far worse on newer red oak floors especially wider boards. Old growth floors and white oak sometimes look like a table top. I cut most jobs 36 50 80 hardplate natural floors and screen 100 grit all floors. Btw I learned bonas hardplate which is 2 maroon pads on a hard plastic plate with double sides disc (not sure of this even counts as hard playing). If I notice chatter which has stopped since I switched from bona belts to Norton I wood hard plate and of needed water pop. My stain is always even my finish is always clean but I cannot get rid of wave. I used to think it was my machine or me, now I feel like it's the soft grain dishing out and transferring a wave across the floor. It always seems like the wave originates around a board with wide rays of soft grain. I came to this conclusion after seeing it lessen on white oak and go away on hickory or pine. I cut first cut or two at a slight angle. I have tried going slower on first cut and faster as well as slow on final cut. I have tried lowering drum pressure on final cut and alternating drum pressure between cuts. I have tried moving bag to top of sander and one side or the other. I have emptied bag early and left some weight in it. Please help you old salty dogs. Lol. Surely someone out there actually has had this issue and corrected it once and for all. Or am I doomed to a life of hardplating all my floors and water popping every stain job past golden oak? Btw never had a complaint but I lose sleep on every one thinking this will be my first resand or my first job I have to eat.
Thanks so much for reading my 1000 word essay on why floors drive me nuts.
Mike