Howard Hoffman wrote: the top of the L comes to about 1 3/4 inches from the top of the outter barrel.
Try 100 things. 2 will work out, but you will never know in advance which 2. This tiny ad might be one:
BWB second printing, pre-order dealio (poor man's poll)https://permies.com/t/147624/BWB-printing-pre-order-dealio