ride report...
it works well on my ´83 250, but i took the 4mm exhaust spacer out after first test ride.it where too much at bottom and little bit to less on top.
and second test ride with only the 10mm reed spacer and 2 exhaust seal rings:
--- whooohooo---exactly that what i wanted...
smooth strong powerband from bottom to top with no significant diference on top.
it comes smooth out of the small slippery corners without the big rocket effect, when the rear wheel went out of control and i had to close the throttle ...
now i can also take earlier the higher gears..feels from bottom a little bit like my old ´93 kx250, that i had a long time ago... side effect is the engine starts better in cold.
i had also made an 5mm-reedspacer and some 1mm-gaskets, but now dont needed and goes in my spare parts for later projects.