Le lundi 22 juillet 2019 16:07:24 UTC+2, Tim Taylor a écritÂ*:
Likely the canopy or spar. Clean the canopy rail and the area where it touches on the fuselage. A light coat of wax or a very thin open cell foam seal may help on the canopy. Check the spar for rubbing and wax any possibility areas.

ok thanks, I think it is spar related, I will wax and check for rubbing