Knocking noises; vibrations in the handlebar; oil sipping at valve lid gasket

[peterbaron]

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........ I own recently a 2017 Honda CB 1100 RS(now 10.000 km) I ride it a little and I have important issues as follows:
- Knockings under the front valve lid(front right) only after the engine is hot.(camshaft, valve timing, cam chain???) -
** will not address this issue due to lacking supporting evidence, discription is not enough, and I don't like guessing.....
Use mechanic stetoscope or a screwdriver to pinpoint , check and compare ex and in cams, left and right corners
- strong vibrations in the handle bar(high pitch) after 3,200-5.000 rpm doesn't matter the gear, speed or if I rev' it on stand. I check and all the nuts are tightened OK, vibrations come obviously from the engine. I've used first time AmsOil 10w40, then I change it to OEM Honda 10w30-MA, I've changed the sparks too and... nothing -
** you are wasting time and money by switching oil grade from 10w40 to 10w30 and replacing spark plugs to address this issue.
I always use 10W40 synthetic due to hot summer here and long distance rides. Both oil grades are ok for our CBs as per manufacture.
Testing engine for vibration in N & center stand & 3,000-5,000 rpm may have different results than testing when ridden and under load. Also, the OEM mirrors and  handle bar weight B/part #9 and end weight/part #10 are part of anti-vibration tool, check if you have all these
https://www.hondapartshouse.com/oemparts...top-bridge , as a referance/you have RS
I had 2013/5 speed and while riding this vibration was noticable, normlity and I did nothing to correct it. Sold the bike at 56,000 kms.
Then I had 2014/6 speed and the vibration was less than 2013 model. Also left it alone as normal characteristic for this bike. Sold the bike this May with 134,000 kms. 
Now I have 2014 DLX/6 speed and the vibration is very minimal, and again I will not try to correct it.
All my CBs had proper balancer adjustment.
All CB1100 have the same powerplant, 2010-2013 were 5 speed and from 2014 up were 6 speed, some exeptions apply.
- sipping oil from the valve cover gasket, but this is a common fail as I've noticed to all air-cooled Honda.  
** this is not true.
My '13 std had a little seepage, '14 was bone dry, my '14 DLX had a very little seepage and was fixed by inserting drain plug washer onder one cam cover bolt, do not overtighten it, you may strip the thread
Use this thread to address your leak: http://cb1100forum.com/forum/showthread.php?tid=19481
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Some hepful links:
http://cb1100forum.com/forum/showthread....=vibration
http://cb1100forum.com/forum/showthread....+vibration
http://cb1100forum.com/forum/showthread....+vibration
http://cb1100forum.com/forum/showthread....zing+noise
http://cb1100forum.com/forum/showthread....gine+noise
http://cb1100forum.com/forum/showthread....gine+noise
http://cb1100forum.com/forum/showthread....gine+noise
http://cb1100forum.com/forum/showthread....gine+noise
http://cb1100forum.com/forum/showthread....gine+noise
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