Have a whining/whirling noise at start up that revs up then down with the bike at idle. Seems to go away after warm up but not really sure, I think, maybe. Sounds like it's coming from the cam chest area. Had the HD cam tensioners, oil pump upgrade done about 2 yrs ago. Thanks in advance for any ideals. The bike is a 2000 road glide, 95ci with andrews 21 cams and pciii.