WOW!...Thanks for your informative reply
I just happen to have that very size and type of gasket...used it on a pellet stove I refurbished for hopper lid and door glass. Thought it was too different from what was stock when new on this stoker.
I know what you mean about the short rear piece as far as proper placement and fines...I had experienced that on my "learning curve" already.
Is the size of metal strip at the rear "stongback" just need to be correct length and width to fill the channel space? Does thickness of metal need to be anything critical?