[solarisjock]

looking around a bit, it looks like the T-hop was a mix between an ER-hop and a Flat-hop.
the window was extended and a ridged plate was used to depress a flat hop modded bucking across the now elongated hop window.

 

[solarisjock]

i am currently trying to do it using 100% pure clear silicon. "architectural grade" if that means anything special. I should know by this time tomorrow how well it works. i used a shishkaabob wrapped in ducktape for the inner diameter