Honda-SOHC

That type of plug cap was  also fitted to the Opel Rekord (D) Coupes back in 1973 I was drivng one down to Cornwall for our sumer holiday when the car dropped onto 3 cylinders in heavy traffic. Being an automatic it was it was almost undriveable.

One of those caps had failed plus the leads were the then quite new carbon fibre typ leads - I used a Nappy pin to replace the cap - it worked a treat.

Exactly that's why I stayed with the original seperate units - Im chicken!

Might be worth asking Julie I believe she assembles the kits from her stock of Ob rings.

I watched the short video - I ended up confused as Jennifer refers to Patrick being killed wheras the text says it was Kieron that died?

Just a bit of an update and to give credit to Vince Goosey at this firm who I bought my lock ring tool from back in May 2023. www.gbmotorcycleproducts.com

I today received f.o.c. a set of four pins to replace the ones in my tool that fits the poorly made replica part supplied my DS.
That's what I call customer service.

I decided against sending my lock ring back to DS for them to change it as they were not prepared to do so until the faulty part was back with them to compare- clearly they still have the faulty ones left on the shelf. I did not want to take the risk of them sending the same part out again not to mention the time delay.

Clearly DS knew there was an issue with a batch of their lock rings - they could have sent me a replacement that I would have paid for on the basis of a refund on the returned part. This was an opportunity for them to give better customer experience that they missed.

This morning I tightened up the lock ring with the new pins fitted to the tool.

https://en.wikipedia.org/wiki/Ailsa_Craig_Engines

It might not be concourse - taking my time with the masking tape was worthwhile I believe.

.fork clamps by Macabe Thiele, on Flickr

On both my 400 & 500 I could rotate the crank by hand easily using the alternator rotor as a grip point.

It probably depends on your grip strength in my case it was not as easy with the pistons in place though it was easy to rock it through what I call the null pont.