Element cover for Buffalo boiler. BIAB.

[Cpt.Frederickson]

If you google DMS it'll give you a breakdown of exactly what it is, apparently causes off flavours and aromas. Try having the lid partially on, should be fine (although can be a job to perch the lid on a Buffalo).
As I say, stirring before power on when you've finished mashing helped to minimise scorching onto the element. I am one of a number of brewers who still had problems and thus modified the boiler, but it was quite simple.
First boiler I had (30 litre version) experienced the same issue you describe toward the end of boil on my 6th AG, then on the next brew it blew the thermal fuse. I upgraded this and no issues after that. Eventually sold this on eBay to get the 40 litre.
Second boiler I upgraded thermal fuse and the thermal cut out after a couple of issues with the wiring on one terminal frying itself (also replaced), worked like a dream afterwards. It's now also in the hands of another brewer as I decided to get a nice custom job off mrlard
I reckon its worth getting some spares just in case as I had to sling the whole brew because of the thermal fuse blowing and not having a replacement. There are loads of guides hereabouts and it really isn't difficult as long as you're sensible, elsewise electrickery could fry you...then how will the beer get finished!

[poolking]

Thanks cpt. Just ordered a 3 pin kettle element.

Going to fit this into my buffalo, basically as a back up, will keep buffalo element clear (thanks for the tip) prior to boil. Was thinking of making a keggle but this 40 ltr buffalo is plenty for me. On a bit of a budget, and hope this idear will work. Only just started all grain brewing and already I`m making equipment . I`m on my way to the dark side................
Thanks, Dave.