I had the very same issue. The parts available at 3 local parts store all had the ridge too close to the canister.
I ordered this https://www.amazon.com/gp/product/B007QB8JA4/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
I'm hoping it is the correct fit. I can let you know if you haven't...
