the bit im missing here adspeed is what advice you are giving?
you are making a number of comments but with no conclusion.
now i have ridden your tunes and i know we both dont go after the same thing so im not expecting us to agree totaly on ideals but you fail to see what I am asking from an engine. in fact you failed to bother to ask so im assuming you are more interested in peak power figures which i am not?
i have asked your advice on countless times but you have never managed to answer but you manage to criticise easily.
i know this is a scooter forum and a bit of p155 taking or wanting to be a big fish with the nicest desert boots is often the motivation but in this instance you are suggesting that we are wrong to buy the rt255 which in a traditional lambretta engine layout produces better performance than most road going ts1 s.
now i realise that bolting on a rb kit, matching and flowing will produce more power.....i could even put a "cezetaspeed" sticker on it and claim the credit for af rayspeeds work but thats not what i / we are looking for.
as you know mbd did an rt tune ts1 for me, mark offered me many options and one was the dyno gragh that you posted and that many of the tuners on this forum praised on another thread having seen them produce that power on their dynoes. so if i wanted it then a simple yes would have got it but i was in search of something differant and thats what i got. less power than the regular rt ts1 but with the power where i wanted it delivered in the way i wanted it and most inportantly in a package that feels balanced and refined like a more modern two stroke road bike.
i dont ride in the peak power for long, 500 rpm within the overall range is irrelavant so i ignore it in favour of a gear that is long and forgiving as there is power across the range.
plus as said already there is not a budget restraint, none the less the rt is not ott cost wise. i got a fw quotes from the tuners i respected when i did the ts1 and they were all roughly the same and all wanted to use mbd products anyway.
the 64mm stroke crank is a bit dearer than normal but that differance i could easily spend by going out in the evening so its relative. the rt barrel kit is a bit dearer so you could tune a mugello 225 to be the same maybe but once you have tuned the mugello you are back at the price of an rt because the rt comes already for the road where as the mugello needs a lot of work. in fact the rt 225 will produce pretty much standard ts1 power out of the box and the mugello only 12 bhp.
then the mugello does not come with a gasketless recessed head, as this is a common reason for engine failure even on an adspeed tune then this is very desirable for the rider that would rather not get his hands dirty or spend the day waiting for the aa van.
so, mbds dyno reads a bhp or two higher?..... but the motors are still looking good on other peoples dynos, they are a bit more expencive?.....well thats because you get more for your money im thinking. if you want to save money by matching bits and bobs from other machines then this is not a bad route either but not my choice. the ts1 / rb is more powerfull?....buy one of those then its all down to personal choice and expectation.
So given my brief of low tune high cc motor with a left hand filtered carb and a clubman pipe what would you be advising or offering adspeed?
"PS As the syaing goes its not about how big it is its what ya do with it that counts!! " if only that were true
(To know what you prefer instead of humbly saying Amen to what the world tells you you ought to prefer, is to have kept your soul alive.
-Robert Louis Stevenson )
HAPPY NEW YEAR 
with envy. 