carefully measured hole position in right top rail on right side for the spring loaded plunger pin of canopy stop mechanism. Drilled it and deburred to accomodate the pin test run works as advertised. Mine is positioned about 1/2 way back so that i can grab the canopy and pull back forward from the seated and strapped in position. I might drill a second hole in rail about a 1/4 way back just for a little air on colder days. time included in other posting today
