Hi Richd, How many miles did you put on motor after overhaul? Then all of a sudden smoking both sides evenly?
You don't visually see problem with bores. This may take some time to sort.
At this point is it best to reassemble & road test or pull pump now & inspect? If/when you remove pump bench test it upon removal. The bench test is very accurate if you do it correctly. Any drop of oil in port is a fail..
After bench test, remove balls & inspect for dirt of any kind. Inspect seat. My experience is return ball seat is much more prone to wear. In my opinion due to particulates in the oil. I've observed this on 100% of the pumps I've taken apart. I've personally had bad luck with reseating balls like it says in shop manual
. I can't post photos here. If you PM me your email, I'll send videos of pump test, & photos of worn ball seats. When ball seat starts wearing too much you can get hit & miss operation of return. Thing is, it's not like dirt that holds ball open. The return volume slowly degrades until it can't keep up.
Diagnosis is critical. If you don't find a problem you don't know if you fixed it or not. If pump fails test, that tells you something very important. If pump passes test perfectly, where does that leave you? I've observed on pumps beginning to fail from worn seat, the oil will very slowly drop. (this is after you removed ball & verified no dirt in seat). Do not put the pump back in until you have absolutely zero drop in port for at least 15 seconds. I mean zero!! A perfect seat will hold over 5 minuets.
Once too much oil is in sump the flywheel throws huge volume of oil onto bores, no ring can keep up with this much oil & the smoking starts. What's odd is it can take some heat to bring the smoking on. At the same time, not seated rings can show no smoke at first. After the oil gets warmed the smoking can be profuse. I can't explain this but have observed it a few times.
How many miles was your first short rides each?
It is sounding like oil pump problem... 9oz is about 260cc.
On parked bike a good oil pump feed side should not allow oil to drain into motor for several weeks. Oil in tank might drop 1/16 max. My bike & others I checked can set 2-4 weeks with no measurable drop.
I use the cheap baby bottles from grocery store. 3 pack is about $3.50. They are marked in both oz & cc. Quite handy for measuring oil.
Looking like this will remain a mystery until more diagnosis is done.