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I fear the worst

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csd4t:
Got my bike up and running but it was burning a little oil from number 4 cylinder, no big deal I thought as it had not been run for many months and was thinking maybe a sticking ring or valve stem oil seal. This week is my first ride due to a knee replacement and after 20 odd miles I find the following.
No smoke on start up when cold.
No smoke on overrun
No smoke on normal acceleration
Smoke on acceleration with big throttle openings
Smoke at standstill with hot motor upon revving.
What do the collective guru's think? Should I carry on and hope it clears or carry on smoking away for the summer?
If the motor has to come out then it can wait till winter methinks.

MarkCR750:
It's probably a valve guide but could just be a sticking ring, take the no4 plug out and pour in some neat redex or parafin , rock the bike in gear to move the piston a little, leave it to soak overnight, in the morning place a towel over the plug hole and turn the engine over on the starter to expel any excess liquid, have a look down the plug hole with a torch to ensure you haven't got a pool of liquid , it could "hydraulic" and damage the engine if you have more than a surface coating still in there, put the plug in and run the engine, it will make a lot of white smoke initially, it might just unstick a gummed up ring, if it still smokes just run it and fix it in the winter as you say.
PS change the engine oil after the above procedure.
PPS the above is assuming the the smoke is blueish, i.e. oil smoke, if it's black smoke check your carburation.

csd4t:
Cheers I'll give that a go, definately oil smoke (white blue ish) carbs have been ultrasonically cleaned and balanced so very close to where they should be, all jets and settings are standard, airbox is standard and a new set of 341's.

csd4t:
100 mile update, the oil/smoke problem is still there but probably not as bad however it's running much too rich (oily petrol mess from the exhausts).
The bike had a yoshi copy 4 into 1 and pod filters when I got it mains were 95? I have put a standard airbox with K+N back on and 105 mains, the screws are now out 2 turns but it's still very rich. Not sure whether to put the 95's back in and/or drop the needles a notch. Any thoughts?

hairygit:
What position are the needles in, standard they should be 3rd groove, bang in the middle, chances are they were moved up to make it run with yoshi pipe and pod filters. Although I am confused, normally you need to go UP jet sizes for race exhausts and pods, maybe the P.O. Drilled a set of 95 jets out to save a few quid:$

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