Steppednit,
I agree with your thoughts on the scavenger tube area and that is where I am looking also. I could be all wet but seams to me like it over fills once it is shut off raising the oil level. I do not see away to adjust the height of the tube to lower the level but.......

sitting here thinking about it may be i spoke to quickly about adjusting the spray flow?? if the flow spraying on the chain was lessened it would have to send more to the scavenger tube which in turn should *** out more oil from the bell housing possibly lowering the level???? just thinking