Hemi Ragtop...it sounds like you have a ring seal issue to me.

My 572" hemi is more of a race build that's streetable, but it doesn't use oil. I've never had to add any to it. Been running it since 2006. I don't drive it as much as I used to. Having kids put a damper on that, lol, but it used to see a lot of street time. Not to mention track time.

The first 2 freshen ups, the valve guides and valve stems were worn. First freshen up in fall 2008 I just put in new valves, tightened it up so I ran it for 4 more years like that.
This last time I had bronze liners installed along w/ new valves...that was over the winter of 2012/2013.
I still use the factory style springs to locate the rockers...may contribute to the guide wear problem?
I have MP aluminum heads from the 2005 production range.
I use the teflon valve seals on the intakes and NO SEALS ON THE EXHAUSTS.

My main clearances are .0035" and rods are at .0023-.0024 w/ coated bearings.
Piston to wall is .0075".

I'll be freshening it up here soon. Hoping to get it on the stand and apart in the next month or so.