I guess lots of good info here and anyone or maybe something else could be the cause. Both recipes are very light bodied, and before fermentation will have a pronounced bitterness.
Particularly for the Galaxy bittered version. This version, like the commercial example in my opinion has a bite from the Galaxy bittering that I don't like. It will fade during fermentation to a point most drinkers don't mind it or in fact don't notice it. This was the reason I created a new version bittered with Magnum.
The Magnum bittered version. The bittering is super clean and smooth. The hop aroma and taste is fresh, vibrant and very fruit punch like. The only thing I have ever noticed with this version is when the boil is less than 90 minutes the Weyermann premium Pils does not seem to have been completely cleaned up of the associated undesirable malt aromas. A 90 minute boil does the trick and is how the recipe is designed, with bittering additions at 60 min, check that also.
But having said this, these are my notes after brewing both many times, and I have to say in both recipes the affects are very subtle, they are really points of fine tuning.
For some weird reason i didnt see your verion on brewbuilder....i used the pure galaxy vers....After reading your post I had a look and found it...will give it a go in the future..thanks Steve