From the pictures I’ve taken and studied, the advanced movement is equivalent to 1 tooth of the belt - so whether it’s jumped or “settled down” on running 🤷🏼♂️
Possibly where I have gone wrong in hindsight, is tightening the tensioners hex bolts to a point and then using a 30mm socket to nip up the adjuster in desired position before tightening & torquing the hex bolt.
I don’t have a 30mm spanner in my collection so improvised. Maybe before I do anything I’ll get one of those today.
If you don't hold the adjuster while tightening the bolt, it
will move. Which is why you must turn the engine through before refitting the covers.
I bought my timing set used, and it's the cheaper Sealey one that doesn't have the spanner. The first time I used it was with a standard 30mm combination spanner, which is far too long and the ring barely fit the nut. Buying the spanner separately would have cost almost as much as I paid for the rest of the kit, so I improvised:
That's an old 30mm socket that had clearly been used with an impact wrench because the 1/2" drive hole was badly rounded. I bored that out so my Torx socket fit through it, and welded on a piece of steel strap bent to clear everything. The hole is to cable tie it to the handle of the locking toolset.