Cannot tell much from a recorded noise. Mine were really rattly after checking usual clearances and lifter impact etc Local member suggested that a pushrod was hanging up in the rockerbox arm. He suggested swapping them over. Lo and behold one was. I opted to swap them and also to use grinding paste...

I fitted the kit from gearbox spares.

Carefully reduced the shaft down, on the lathe, to get a tight intererence fit for the new end. Not sure you can do it, without a lathe.

I think my box was originally PA as well.

... making a copper gasket as per John Nash's suggestion to sit on top of the spigot. Is there a particular type of copper which I should try and find? approx. 0.025" do you think? I got it from David Anderson, on the forum, here: http://forum.arielownersmcc.com/viewtopic.php?f=21&t=12399&...

One of mine us like that too.

I followed david Anderson's advice, when I had issues lapping a 500 iron head (the head would have needed a lot of lapping to get it onto spigot - likely due to mismatched parts from different places ) and made up a copper gasket to sit on the spigot. Seems to work

The tree is usually down the bank a fair way, alongside the river. One of the cars is abandoned, prob after an aborted crossing. I was staring at it yesterday wondering if my wng would make it through .... in the end, I went round the very long way. Seems flooding is becoming common nowadays, for a ...

10 mins late to the pub, this morning, due to flooded roads and they had ALL gone ...

When you drop the head onto the barrel, without the pushrod tubes, pushrod or headbolts in, then it will sit on the raised spigot. You can rotate it 360 degrees- which you need in order to grind the joint to an airtight seal.

You can always add an extra plate by taking the lip off the back of the centre. You then take off the tabs on the outside of a clutch plate. That plate now goes in first, and bears on the clutch basket, followed by a another plain plate. Then it's all the existing plates in the same order. I've done...

I've got some standards.
They're all without rings or pins tho - sorry.