Yup. My p125x (1978, stock cylinder, 20/20 carb) has started spluttering to a stop when stopping at lights or a stop signs on a downhill gradient. Has no problem on the straight or on an uphill. Seems to happen with full tank, half tank, less than half tank.
Compression is 100psi, so i'm thinking there's a slight leak somewhere? (not at head or exhaust tho - they seem sound). Could the low-ish compression be part of the problem? What could be the main reason? Any experience advice hugely welcome. Scoot runs great otherwise.