Derek it was not ment to come across in the tone it did sorry,
I only changed to the Panther range when I got pulled over by the Old Bill for being over weight with the Boxxer 421.
Its a bit like the saying women have "When you've had a black there's no going back"
Well I'm like that with blower sizes, to stay within the weight limits on the road I chose the Panther 20 because it had all the same workings as the Boxxer ie engine size blower size accept for the weight and there lies the difference the Panther was well over 100kgs lighter.