After one month, my Scorpa TY125 F fitted with 143 cc. kit, is again at my home; due an abnorm consuption of oil, trough the Italian importer SCORPA Italy, was shipped to the factory in France; the bike was inspected and were changed the piston rings; all that with no cost for me!
I was able to test only for a while (80 Km.) and looks that the things are OK: no smoke and no sign of change in the oil level.
Cicci