this is the letter from Verner. The link for the video is at the end. Hope this helps!:
Hello,
I don't know if your Scarlett 3VL engine dealer has contacted you.
I'd rather write one more time - Kamil Verner.
I need to have the simmerring (gufero) retainer checked on 3VL and 3VLA engines manufactured from September 2022 to today. Unfortunately it could be that the part has been swapped from an older 3VW type. This part holds both the simmerring (gufero) and the crankshaft main bearing axially. And here is the problem. The older type has the recess for the ball bearing 1 mm deeper. This does not secure this bearing against forward movement. Therefore, this part must be disassembled according to the created video-manual and checked. On all engines the bearing should protrude 3 mm from the crankcase. If this is not the case, please inform me directly. The bearing may have already come out a little - it must be carefully tapped or pushed back inside the crankcase.
If you have the correct bearing retainer removed (i.e. 3mm) you can refit or put a new one in.
I am very sorry for the complications and thank you for your cooperation.
P.S. Any skilled person can do the replacement, no need for an aircraft mechanic.
The engines may be fine, but we need to be sure.
video repair:
https://drive.google.com/file/d/1MzI_Na8B0qlNV4EY0ZU8EO3vCWZGpz3_/view?usp=sharing
