Why having won that class when it was very competitive would anyone want to come and try again?
Most of the riders you mention have proper jobs now as trials wouldnt pay then, and certainly wont now.....
Thats exactly like a normal (13?) gas gas sprocket so im not sure mitani or jitsie dont buy from a british manufacturer or s3 anyway, its nothing special.
Slides wear but for trials not mx its a good carb.yz is not trials either, and its japanese.
People who feel they need electronic ignition probably do not set btdc as a regular thing. As part of prep for 119b's I think its essential.
raga and others broke magnesium swinging arms.
You can check alignment front to back of wheels in a few minutes with a piece of string, you know how?
sprocket looks twisted
Depends on mud.
Different types, deep shallow grassy etc.
If you spin it in 4th it might work on deeper stuff.
second and very careful use of throttle can work ditto first, but from what im imagining you need to look around and see if there is a run up even small or grippy part to get going.
