Subject: Re: G9 gearbox
I believe they've changed the chemical compound of Wellseal within the last few years. I used it on my engine rebuild in 2104 and it failed completely. I've the photos to prove it. An expensive episode and I seem to remember the reason given for changing it was to do with EU regulations on some of the ingredients. No idea if that's true.
Anyway, the comments on the model engineer debate seem to refer to older applications and I have also had great results with it in the past. Nothing's as good as it used to be. However...I shan't be using it again. Fingers burnt etc.
These days I have more faith in modern products even if they are harder to clean up and messier to apply.