Burnt Valve?

[Camel]

VERY Light hone, to remove glaze, built up shit...

[THEMOTORHEAD]

whenever i hone a bore or anything like that i use tranmission fluid and rag to pull out deep embeded dirt etc
'then wash with really hot sapy water and rinse with scalding hot water (then it dries via evaporation)

[ross79]

Ok, taking onto consideration the advice given here, I left the stock piston rings in place. Finished putting the engine back together last week and rode it to work a couple of times, but I have noticed it doesn't want to idle below 1500rpm :(

Any ideas? I've gone over the vacuum lines a dozen times now and can't see anything wrong. I should mention that in the process of replacing the valves I removed the pair valve system completely and welded up some plates to block off the holes above exhaust ports. I have capped the the line that goes to the throttle bodies and blocked the large line on airbox.

Thinking maybe I should sync the throttle bodies again, and will need to get it tuned to suit my muzzy 4-1.

[Maj]

check your plumbing on the iap sensor on the back of the airbox, is it connected to the 4 throttlebodies and no open lines anywhere ? and make sure you have not connected vac to the the atmospheric pressure sensor on the left inner frame

[ross79]

IAP on airbox is connected to the throttle bodies and can't find any open lines.
Getting sick of pulling out my airbox so many times :S No vac line connected to the AP sensor on frame. Have spent a couple of hours searching the net and going over tech manual with no success. Apart from this problem the bike runs great.