hi doubledd this is my first super tigre and here is the figures i have so far after about a gallon on the bench
original carb original muffler backed 200rpm from top
os-f plug
10%
jxf wood 18x6 8200
zingerwood 18x8 7200
apc 15x8 9600(fitted by mistake instead of the 16x8)
20%
jxf 18x6 8400
apc 16x8 9000

very poor mid-range with heat on or off pick-up was horrible
not being an engine expert and having read endless posts about this engine´s carb i decided to just change it
so i used something i had at hand a thunder tiger 120rp´s carb and it worked wonders
tt carb original muffler
10%
jxf 18x6 8300
zinger 18x8 7400
apc 16x8 9400

it doesn´t seem to like the zinger prop
but pick up is now as good as my saitos on all the props
can´t wait to put it on an airplane(bought for a scrachtbuild still on the design stage so it will be a while)
will try and make a vid of it with the tt carb this weekend