449 Knocking Sound / Strange Noises

Hi My Husky 449 is making a strange knocking sound from what seems like the RH Rocker area.
It goes away with RPM so isn't rod knock,

And when started with the choke and left on high idle,
The noise has disappeared completely.

Only to return the next time it was started.

I am thinking it may be rocker or valve clearance related,
And not sure how to locate the half balls and shims to adjust it in Australia,
Or any idea of prices.

But also think it could possibly be timing chain tensioner,
Especially if it's Hydraulic.

Has anyone else had a bad knocking sort of noise that they found and fixed,
On one of these 449 / 511 motors?

Have heard of the Torque Limiter bearing failing also?

And some cam and half ball / rocker issues.

Apart from that it runs and rides fine,
The sound is very notice-able at idle.

Any help appreciated.
Cheers

Clutch in and in neutral? I pull my clutch in and the knocking I hear goes away

Where are you based in Australia? I'm in Melbourne and have done complete engine rebuilds on the 499/511's and I'm happy to help you diagnose the issue.

I am in Brisbane.
The noise nearly sounds like rod knock but goes away with revs.
It was not there at all one of the times I started it after warming it up with the choke / fast idle pulled out.
Did the stator bolts and it wasn't them either.

Wondering if it could be the timing chain guide in the rocker cover,
Or something in that area....

Cheers

Just saw a vid where someone else has a similar problem and it was their TPS voltage at idle.
Which sort of makes sense as the noise goes away when hot,
Needs choke out to start,
And idle speed adjusted with by turning the choke like a dial.

Could also be the crazy high valve intake clearance used on the TC 449's which is nearly the same as the exhaust,
But really hoping for it just to be the TPS voltage now