hmm i cant imagine the differences between a 12.12 and 13.13 being massive, unless you had a multi-circuit carb.
yea keep updating with photos, it's interesting to see what people outside of this niche do in regards to tuning.
if your tuner doesnt have extensive knowledge of 2t i can't imagine that you'll see massive gains. if i was your tuner and doing experimental stuff, i'd want multiple pistons and cylinders to start