Flap pullies are usually in the fuselage but the flap handle can be an issue as posted above. Nothard to modify the ribs, install hinges, bellcranks...
Some info on the changes as they came from Piper in this thread. https://www.supercub.org/forum/showthread.php?53836-PA-18-Changes-by-Year-and-S-N As...
I now manufacture and sell the Bungee Buddy. I bought the tooling and rights along with the Stewarts STCs for the O-320 on the Clipper, rear mounted...
It is in one of the PA18 inspection videos I put on YouTube but basically find the right size safety wire that fits the gap, twist it where it is in...
I installed the Thrustline mod and I still preferred two turns of nose down trim on landing. After installing the P STOL Flaps I do not need to touch...